WO2004016974A1 - Pressure relief valve - Google Patents

Pressure relief valve Download PDF

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Publication number
WO2004016974A1
WO2004016974A1 PCT/JP2002/008283 JP0208283W WO2004016974A1 WO 2004016974 A1 WO2004016974 A1 WO 2004016974A1 JP 0208283 W JP0208283 W JP 0208283W WO 2004016974 A1 WO2004016974 A1 WO 2004016974A1
Authority
WO
WIPO (PCT)
Prior art keywords
iron
pressure relief
relief valve
valve seat
containing sphere
Prior art date
Application number
PCT/JP2002/008283
Other languages
French (fr)
Japanese (ja)
Inventor
Kunitaka Mizobe
Original Assignee
Kunitaka Mizobe
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunitaka Mizobe filed Critical Kunitaka Mizobe
Priority to JP2004528818A priority Critical patent/JPWO2004016974A1/en
Priority to PCT/JP2002/008283 priority patent/WO2004016974A1/en
Priority to AU2002328614A priority patent/AU2002328614A1/en
Publication of WO2004016974A1 publication Critical patent/WO2004016974A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/08Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
    • F16K31/084Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet the magnet being used only as a holding element to maintain the valve in a specific position, e.g. check valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side

Definitions

  • the present invention relates to a water vapor transfer control device, a dehumidifying device, a humidifying device, and an airtightness inspection device (hereinafter referred to as a “used device”) used for the setting thereof due to a human error in application or an unavoidable unexpected abnormality. ”) To use the pressure relief valve to maintain the functionality of the pressure relief valve.
  • the present invention relates to a pressure relief valve which is used to prevent malfunctions caused by these used devices as much as possible.
  • the present inventor has already proposed a water vapor transfer control device that uses a moisture permeable membrane to control the humidity inside the box.
  • this water vapor transfer control device has a cylindrical body 1 in which an inner end port 10 communicates with the inside of a box body K and an outer end port 11 is opened to the outside air.
  • Three moisture permeable membranes (the first membrane Ml, the second membrane M2, and the third membrane M3) are divided into two small chambers 21 and 22.
  • the first film M 1, the second film M 2, and the third film M 3 are collectively referred to as a symbol M).
  • 1, 32, 33 (for example, metal mesh, synthetic resin mesh, etc.) are provided as membrane support structures.
  • a second film M2 and a third film M3 using cloth are used.
  • the first film Ml, the second film M2, and the third film M3 are used to prevent invasion of water vapor from outside air.
  • the outer surface facing the outer end port 11 is formed of a water-repellent layer made of polyethylene. At least two flat membranes are used for such a water vapor transfer control device, dehumidifier, and humidifier.
  • At least one small chamber consisting of a boundary part that constitutes a boundary surface for the movement of water vapor and air using a moisture-permeable waterproof membrane made of Place a conductive porous body or a porous body with different thermal conductivity near a possible waterproof membrane, in a small room, or in a ventilation path. Therefore, the characteristics of water vapor transfer and air transfer characteristics are adjusted by the arrangement of substances having different heat capacities in the ventilation path.
  • a common feature of these components is the use of a flat membrane-like moisture permeable membrane.
  • the diameter of the water vapor is 0.000 im (Fiber Handbook: 2nd edition) : Published on February 15, 1995: Maruzen Institute of Textile Sciences: p. 5 2 3) A membrane with an average pore size of 1.0, 1.2, 1.5 zm, etc. ing.
  • the water vapor movement control device, dehumidification device, and humidification device respond to minute changes in temperature in response to changes in the movement characteristics of water vapor and air. It is used to reflect changes in the surface temperature of a flat, easy-to-use, water-permeable, water-repellent membrane that is permeable to moisture.
  • a conventionally used stretchable and inferior rigid woven fabric / fiber fabric using non-woven fabric is used.
  • the humidity control functions of the water vapor transfer control device, dehumidifier, humidifier, etc. control the amount of water vapor that can be processed per unit time and the air permeability, which limit the amount of water vapor that can be processed per unit time.
  • the adjustment is made using the moisture absorption of the fiber material and the water-repellent surface due to the passing water vapor.
  • This adjusting means is constantly generated in response to temperature changes due to compression and expansion due to adiabatic consideration, which are caused by the permeability of the moisture permeable membrane and the positional relationship that forms the small chamber of the moisture permeable membrane having different moisture permeability.
  • the efficiency of the heat exchange is adjusted using materials with different thermal conductivity, such as porous materials, 'J's, and room structures.
  • the application may exceed the safe use range caused by, for example, application to a volume beyond the applicable range or to a temperature change environment beyond the applicable range.
  • Phenomena such as physical tearing or cracking of the water-repellent surface due to water-repellent materials (substances with high dielectric properties and low water absorption) processed into woven fiber materials, as well as moisture-permeable membrane substrates such as tearing and tearing of fiber materials Damage to the membrane causes damage to the water vapor transfer control mechanisms such as the humidity control function, dehumidification function, and humidification function.
  • the moisture permeable membrane changes over time due to the initial use (line A1), 5-year use (line A2), and 0-year use (line A3).
  • An example is shown. This change over time is affected by the cleanliness of the air in the environment in which the steam transfer controller is set.
  • the membranes with the smallest air permeability and other moisture-permeable membranes also utilize the inside of the complex-shaped pores existing in the membrane as air passages, and the inside of these pores Is gradually contaminated by air pollutants such as dust and oil mist contained in the passing air.
  • Membrane surface of membrane support structure such as conductive porous body and heat insulating porous body
  • the shape on the side oriented to the plane is adjusted and the positional relationship is adjusted.
  • the humidity control function of the water vapor transfer control device adjusts the appropriate application depending on the amount of water vapor that can be processed per unit time and the air permeability that forms the boundary of air movement. It must be applied within the range of appropriate conditions, taking into account the volume of the space to be wet, the temperature change condition of the space to be humidified, and the atmospheric pressure as the effect of the altitude to be set.
  • the application may be applied to a volume that exceeds the applicable range or to a temperature change condition that exceeds the applicable range. Deformation or tensioning of the membrane due to extreme pressure, and thus premature breakage, is most likely to occur on the smallest permeable or permeable membrane or the membrane that has clogged. We are utilizing.
  • auxiliary function protection means by perforating or detaching the target moisture permeable membrane
  • the pressure change amount for exhibiting the functionality of the auxiliary function protection means is a disadvantage.
  • these operating thresholds may cover a wider range of application cases, depending on the volume of the space subject to humidity control, humidification, dehumidification, etc., and the thermodynamic environment in which this space is located.
  • the design and preparation of the water vapor transfer control device, humidifying device, dehumidifying device, and the hermeticity inspection device which must be used in common when setting these, should be adapted to various application cases.
  • the disadvantage is that adjustments or design types increase.
  • Water vapor transfer control device which is caused by abnormal pressure or surface contamination that causes deterioration of water vapor or air movement characteristics, which may be caused by deterioration of the boundary of water vapor or air movement for a long time.
  • the elastic bodies may harden with the aging of the elastic bodies, and the deteriorated elastic body components may hinder the opening of the valves.
  • the operating thresholds had large variations.
  • the pressure relief valve of the present invention is proposed to solve the above-described problems, and is scheduled to have a moisture-permeable membrane (a moisture-permeable waterproof membrane) that forms an air passage of the steam movement control device as described above. Prevent dysfunction of humidity control performance due to fouling of moisture permeable membranes that may occur after use beyond the specified usage period.
  • the water vapor transfer control device, dehumidifier, humidifier It is anticipated that abnormal pressures will occur in the space in which the settings are made, or that the airtightness inspection equipment used in these settings will cause adverse effects. 0 Prevent.
  • a steam transfer control device that accompanies changes in steam transfer characteristics due to the destruction of the boundary between steam and air movement and rapid deterioration described above, a humidifier, a dehumidifier, and an airtightness inspection device used when setting these Prevent the occurrence of local abnormal pressure inside.
  • this pressure relief valve is that it can be operated at a low pressure threshold such as 5 cm water column and high pressure such as 1 m to 1.5 m water.
  • the pressure condition which is the operating threshold value, does not change even after long-term use, and the rate of deterioration is slow, so that it can be used stably. It can maintain the pressure operation threshold required for the operation characteristics of dehumidifiers and humidifiers. For example, in a general valve mechanism using a spring, these deterioration rates are largely caused by a change in elasticity of the spring itself and a problem of metal corrosion of the spring itself. Invention
  • a box equipped with a water vapor transfer control device, an airtightness inspection device used for setting the water vapor transfer control device, and the like are used devices.
  • a vent passage with one end connected to the equipment to be used and a vent at the other end open into the valve chamber, and an exhaust passage at one end communicating with the atmosphere and an exhaust port at the other end open into the valve chamber.
  • An iron-containing sphere as a valve element is accommodated in the valve chamber, and the iron-containing sphere is normally kept tightly attached to a valve seat formed so as to surround the ventilation port, and is provided with a ventilation path.
  • a pressure relief valve that is configured to cut off communication with the exhaust path, and separate from the valve seat to allow communication between the air path and the exhaust path when abnormal pressure occurs in the device to be used.
  • a magnet is used as means for holding the iron-containing sphere in close contact with the valve seat
  • the magnet is arranged at a distance from the iron-containing sphere and the valve seat in a state where the iron-containing sphere is in close contact with the valve seat,
  • the magnetic force for attracting and holding the iron-containing sphere in close contact with the valve seat is adjusted to an operation threshold value required for the operation of the used device.
  • this pressure relief valve since the magnet keeps a distance from the iron-containing sphere and the valve seat, the magnet powder or the magnetically attracted substance (such as iron powder) that may adhere to the magnet causes the iron to be removed.
  • the surface of the containing sphere can be prevented from being stained, and the generation of magnet powder caused by the movement of the sphere can be prevented.
  • the valve operation can be performed at extremely low pressure.
  • the magnet and the iron-containing sphere are separated from each other at a distance where they do not come into contact with each other, that is, the distance between the magnet and the iron-containing sphere is maintained even at the time of closest approach, so that the iron-containing sphere is not magnetized.
  • the suction force of the sphere to the valve seat does not decrease. That is, the iron-containing sphere, the valve seat, and the magnet are electrically insulated, and the iron-containing sphere has a small movement distance, so that the iron-containing sphere, which is a temporary magnetic material, is not easily magnetized.
  • the adsorption force to the valve seat is stable and hardly changes over time.
  • pollutants such as foreign magnetically attracted substances (iron powder, etc.) from the equipment to be used and the outside air (exhaust gas oil, dust, It can prevent magnet powder and magnetically attracted substances (iron powder, etc.) that may adhere to small magnets and magnets from entering the valve chamber.
  • a separation adjusting unit configured to move the magnet in an axial direction of the cylinder to adjust a separation distance between the magnet, the iron-containing sphere, and the valve seat.
  • the magnetic force for attracting the iron-containing sphere to the valve seat and keeping it in close contact with the iron-containing sphere can be obtained.
  • valve operation can be performed at extremely low pressure, and it can be adjusted accurately to the operation threshold required for the operation of the device to be used be able to.
  • the mounting position of the magnet can be adjusted, and the attraction force of the magnet to the iron-containing sphere can be adjusted.
  • the adjustment width by the separation adjusting means can be widened.
  • the exhaust port may be blocked by the iron-containing sphere.
  • the exhaust port is blocked in this way, it becomes impossible to release the abnormal pressure, and a trap is generated on the used device side.
  • the iron-containing sphere a material having a surface passivation and corrosion-resistant layer such as a ball bearing ball made of low-quality stainless steel ball is preferable.
  • the iron-containing sphere is a temporary magnet that also changes into a magnetic material. Yes, it is a soft (soft) magnetic material.
  • FIG. 1 is a sectional view showing the pressure relief valve of the first embodiment.
  • Fig. 2 is a diagram showing the operating state of the pressure relief valve.
  • Figure 3 is a cross-sectional view showing the separation and close contact between the iron-containing sphere and the valve seat. is there.
  • FIG. 4 is a cross-sectional view showing the separated / close contact state between the iron-containing sphere and the valve seat.
  • FIG. 5 is a cross-sectional view showing the separated / closed state between the iron-containing sphere and the valve seat.
  • FIG. 6 is a cross-sectional view showing an example of a mounting structure of the packing to the valve seat.
  • FIG. 7 is a sectional view showing an example of a mounting structure of the packing to the valve seat.
  • FIG. 8 is a perspective view showing a ventilation groove formed in the valve chamber.
  • FIG. 9 is a sectional view showing a pressure relief valve according to the second embodiment.
  • FIG. 0 is a cross-sectional view showing an example in which the pressure relief valve is assembled to the steam movement control device.
  • FIG. 1 is a sectional view showing a pressure relief valve according to a third embodiment.
  • FIG. 2 is a diagram showing a use state of the pressure relief valve.
  • Figure 13 is a graph showing the results of a limit pressure test of a pressure relief valve using a low water pressure test device.
  • FIG. 14 is a sectional view showing a conventional water vapor transfer control device.
  • Figure 15 is a graph showing the change in humidity control ability due to the aging of the moisture permeable membrane.
  • FIG. 16 is a diagram showing the elongation of the moisture permeable membrane as a function of time.
  • FIG. 7 is a diagram showing the pressure applied to the box in a daily change.
  • FIG. 1 is a cross-sectional view showing the pressure relief valve of the first embodiment
  • Fig. 2 is a diagram showing the operating state of the pressure relief valve
  • Fig. 3 (a), (port), Fig. 4 (a), (port), Fig. 5 (a) and (mouth) are cross-sectional views showing the separation and close contact between the iron-containing sphere and the valve seat
  • FIGS. 6 and 7 are cross-sectional views showing an example of the mounting structure of the packing to the valve seat.
  • FIG. 8 is a perspective view showing a ventilation groove formed in the valve chamber.
  • the pressure relief valve V1 of the present invention is, as shown in FIG. 2, a box K provided with a water vapor transfer control device S, and as shown in FIG. 12, an airtightness used for setting the water vapor transfer control device S.
  • the inspection device T is used as a device to be used
  • the pressure relief valve VI of the first embodiment is an example in which the pressure relief valve VI is attached to a box K provided with a water vapor movement control device S.
  • the configuration of the water vapor transfer control device S is the same as the configuration of FIG.
  • reference numeral 4 denotes a cylinder, which includes a ventilation side cylinder 41 and an exhaust side cylinder 42.
  • the screw section 41a of the ventilation side cylinder 41 is connected to an exhaust side cylinder. Screwed into the screw hole 42 a of the cylinder 42 to be integrally connected.
  • the ventilation side cylinder 41 and the exhaust side cylinder 42 are made of a transparent synthetic resin (acryl, polycarbonate, etc.), the internal state can be seen and water droplets (condensation) can be seen. You can check the state of the sphere, such as the adhesion of mackerel, mackerel and dirt.
  • anti-biological 7 Synthetic resin A UV-resistant synthetic resin can be used, or the cylinder 4 can be protected by providing a sunshade or covering it with a heat-resistant material.
  • the upper end of the ventilation side cylinder 41 is attached to a box K as a device to be used via a connecting member 43, and an assembling hole 44 is formed at the center thereof.
  • a ventilation pipe 46 having an inside formed in an air passage 45 is attached in the axial direction of the ventilation cylinder 41.
  • the upper end of the ventilation passage 45 is communicated with the inside of the box K, while the ventilation hole 47 at the lower end is opened in the valve chamber 48, and the ventilation pipe 46 is surrounded by the ventilation hole 47.
  • a valve seat 49 is formed on the lower end surface.
  • a filter 50 as an air filtration means is mounted, and screwed into the mounting hole 44. By attaching and detaching the end member 51, the filler 50 can be replaced.
  • the valve seat 49 has a form in which a ring-shaped packing 52 is attached along the inner edge of the ventilation port 47 of the ventilation path 45, as shown in FIG.
  • the ring-shaped packing 53 attached along the outer edge of the ventilation pipe 46, as shown in Fig. 5, and with the lower end face of the ventilation pipe 46 simply formed as a concave surface.
  • the configuration shown in FIG. 3 is the most preferable in order to prevent adhesion to the iron-containing sphere 8 while ensuring close contact with the iron-containing sphere 8 as a valve.
  • FIGS. 3, 4, and 5 (a) shows a state in which the iron-containing sphere is separated from the valve seat, and (port) shows an iron-containing sphere in close contact with the valve seat. 8 is shown.
  • the material of the ventilation pipe 46 forming the valve seat 49 a permeable material is required.
  • Teflon (registered trademark) material, stainless steel material, copper, brass, ceramic, and the like can be considered.
  • brass has good workability and good touch resistance, but low-quality stainless steel is preferable in terms of strength, but it may be a temporary magnetic material (temporary magnet). Materials that can become temporary magnets are not preferred for the ventilation tube 46.
  • the ventilation pipe 46 forming the valve seat 49 is required to have oil resistance, and it is necessary to select a substance which is not easily corroded.
  • the material of the ring-shaped packing 52 it is necessary to select a material that can withstand high temperatures and has high oil resistance in consideration of weather resistance.
  • oil components such as exhaust gas may float in the air, and such contaminated air may contaminate the valve seat 49. Therefore, as the materials used for the nozzle 52, nitrile rubber (NBR;), acryl rubber (ACM), silicone rubber (VMQ), fluorine rubber (FKM), and the like are used.
  • NBR nitrile rubber
  • ACM acryl rubber
  • VMQ silicone rubber
  • FKM fluorine rubber
  • FKM fluoro rubber
  • FIGS. 6 and 7 are cross-sectional views showing examples of the mounting structure of the packing to the valve seat.
  • the outer diameter of the knockers 54, 55 is formed to be larger than the inner diameter of the fitting groove 56, thereby bonding the knockers 54, 55, the fitting groove and 56. They are tightly adhered to each other without being adhered with an agent or the like to ensure sealing.
  • an exhaust path 60 is formed at the center of the exhaust-side cylinder 42 so as to be in line with the above-described ventilation path 45, and the lower end of the exhaust path 60 is air-tight.
  • the exhaust port 61 at the upper end is opened into the valve chamber 48.
  • a semicircular recess 62 forming the inner surface of the valve chamber 48 is formed on the upper end surface of the exhaust-side cylinder 42 so as to surround the exhaust port 61 of the exhaust path 60.
  • the upper edge of the semicircular recess 62 is chamfered to the tapered surface 63.
  • a filter 50a as an air filtering means is mounted, and is screwed to a lower end of the exhaust-side cylinder 42.
  • the filler 50a can be replaced.
  • the valve chamber 48 accommodates an iron-containing sphere 8 as a valve, and the iron-containing sphere 8 is always kept in close contact with the valve seat 49. And the communication between the ventilation path 45 and the exhaust path 60 is interrupted.
  • the iron-containing sphere 8 a material having a surface immobilization corrosion-resistant layer such as a bearing ball made of low-quality stainless steel ball is preferable.
  • the iron-containing sphere 8 is a temporary magnet that changes into a magnetic material, and is a soft (soft) magnetic material.
  • a vent groove 64 communicating with the exhaust path 60 is formed in the exhaust cylinder 42 directly at a portion extending from the taper surface 63 to the taper surface 63.
  • a magnet 7 (permanent magnet) is used as means for holding the iron-containing sphere 8 in close contact with the valve seat 49.
  • the magnet 7 has a magnetic force for attracting the iron-containing sphere 8 to the valve seat 49 and holding the iron-containing sphere 8 in close contact with the valve seat 49, at an operation threshold value required for the operation of the water vapor movement control device S attached to the box K.
  • the magnet 7 is arranged at a distance from the iron-containing sphere 8 and the valve seat 49 in a state where the iron-containing sphere 8 is in close contact with the valve seat 49. 2
  • two ring-shaped magnets 7, 7 are superimposed on a cylinder hole 71 formed inside the ventilation side cylinder 41, and a gap is formed between the cylinder and the ventilation pipe 46. The gap is retained and fitted, so that a gap is provided between the magnet 7 and the iron-containing sphere 8 and the valve seat 49.
  • the magnet 7 is moved in the axial direction of the cylinder 4 so as to adjust the separation distance between the magnet 7, the iron-containing sphere 8 and the valve seat 49. Is provided.
  • a spring 72 is provided at the back of the cylinder hole 71, and the magnet 7 is normally attached to the exhaust cylinder 42 by the spring 72. It is urged in the opposite direction (downward in the drawing) via the intervening member 73.
  • the separation distance is adjusted by using a screw engagement between the screw portion 42a and the screw hole 41a of the exhaust side cylinder 42 with respect to the ventilation side cylinder 41.
  • the exhaust-side cylinder 42 is loosened in the retreating direction (downward in the drawing)
  • the magnet 7 is urged by the spring 72 to move downward, and the magnet 7 is moved to the iron-containing sphere. 8 and the valve seat 49 are approached, and a strong magnetic force can be applied to the iron-containing sphere 8.
  • the adjustment of the separation distance that is, the adjustment of the limit pressure is performed by tightening or loosening the exhaust-side cylinder 42.
  • scales 74, 75 that convert the separation distance to the limit pressure are displayed on the exhaust-side cylinder 42 and the vent-side cylinder 41 so that the degree of adjustment can be visually checked. I have.
  • the scales 74 and 75 it is preferable to use a vernier scale such as that used for a caliper as a distance measuring device for accurate adjustment.
  • the scales 74 and 75 may indicate the volume of the box K to be attached or the average temperature band in the region where the scale is used, so that simple adjustments may be made.
  • the iron-containing sphere 8 depends on the magnetic force in contact with the valve seat 49, and the adhesion force is increased by the weight of the iron-containing sphere 8, as shown in FIG. to be influenced.
  • FIG. 9 is a sectional view showing a pressure relief valve according to a second embodiment.
  • the magnet is fitted into the cylinder hole formed inside the ventilation side cylinder 41, and at the same time, the magnet is fitted inside the exhaust side cylinder 42.
  • a magnet 76 is attached, and the magnets 7 and 76 are arranged so that the same magnetic poles (S poles in the drawing) face each other.
  • the other configuration is the same as that of the first embodiment.
  • FIG. 10 is a cross-sectional view showing an example in which the pressure relief valve V 1 is assembled to the steam movement control device S.
  • the water vapor transfer control device S is provided with an outer case 35 on the outer periphery thereof via a heat retaining jacket 34.
  • An extension pipe 36 is piped through the heat insulation jacket 34, and the upper end of the extension pipe 36 is opened into the box K, and the lower end of the extension pipe 36 is connected to the pressure relief valve VI. It has a structure that communicates with the upper end of the ventilation path 45.
  • the pressure relief valve VI is integrated with the steam movement control device S, and its handling is convenient.
  • FIG. 11 is a sectional view showing a pressure relief valve according to a third embodiment
  • FIG. 12 is a view showing a use state of the pressure relief valve.
  • the pressure relief valve V 3 of the third embodiment is an example in which the pressure relief valve V 3 is attached to an airtightness inspection device T used for setting the steam movement control device S.
  • the airtightness inspection device T does not apply stress to the film body M or the box body K of the water vapor transfer control device S by applying a slight pressure, and is highly sensitive and accurate. By inspecting the airtightness of K, it is possible to detect leaks in airtightness due to breakage of the box K or tearing of the membrane M.
  • the structure is such that a pressure intake casing 86 having a pressure buffer space 85 formed therein and a pressure intake casing 86 at the end are connected to each other.
  • An upstream air supply pipe 88 whose base end is connected to the gas injection device 87, and a downstream air supply pipe whose base end is connected to the inside of the box K and whose base end is connected to the pressure intake casing 86.
  • a pressure gauge 92 is provided.
  • the upstream air-supply pipe 88 and the downstream air-supply pipe 89 are connected to a pressure intake casing 86 in a state of being arranged in a straight line, and a distal end pipe section 8 8a of the upstream air-supply pipe 88 is provided. Is the downstream air supply pipe
  • the upstream air supply pipe 88 and the downstream air supply pipe 89 are branched so as to have an angle (perpendicular) to the straight line where they are arranged, connected to the pressure intake casing 86, and sent from the gas injection device 87.
  • the incoming gas is sent from the upstream air supply pipe 88 to the downstream air supply pipe 89 to the inside of the box K, and the return gas reflected from the inside of the box K is sent downstream.
  • the return pressure intake pipe 91 takes in the differential pressure gauge 92 from the return pressure intake pipe 91, and the return gas taken in from the return pressure intake pipe 91 to the differential pressure gauge 92 comes out. It is configured to measure a differential pressure between the pressure and the pressure of the forward gas taken into the differential pressure gauge 92 from the forward pressure intake pipe 90.
  • the pressure of the outgoing gas was If the pressure is greater than the pressure of the return gas, the difference The pressure gauge 92 indicates the differential pressure, it is determined that the box K or the membrane M is damaged and the airtightness is leaking, and the pressure of the outgoing gas and the pressure of the returning gas are almost equal. In the same case, the differential pressure gauge 92 does not indicate the differential pressure, so it is determined that the airtightness is maintained.
  • a water receiver 93 is provided at the end of the downstream air supply pipe 89 to receive water flowing down from the inside of the box K.
  • the upstream air supply pipe 88 is provided with a pressure safety valve V 3 on the upstream side of the upstream pressure intake pipe 90.
  • the pressure relief valve V3 is attached to the inspection casing 94 with the pressure relief valve V1 shown in the first embodiment turned upside down.
  • connection fitting 77 connected to the air passage 45 is attached to the lower end of the ventilation side cylinder 41, and the connection fitting 77 and the upstream air supply pipe 88 are connected by a flexible hose 78. It has been.
  • the weight of the iron-containing sphere 8 is added to the valve seat 49, so that it is necessary to adjust the attraction force of the magnet 7 in consideration of the weight of the iron-containing sphere 8.
  • the magnet 7 moves the iron-containing sphere 8 and the valve seat in a state where the iron-containing sphere 8 is in close contact with the valve seat 49.
  • one ring-shaped magnet 7 is inserted into a cylinder hole 7 1 formed inside the ventilation side cylinder 41, and The gap between the magnet 7 and the iron-containing sphere 8 is provided by attaching a gap 79 between the magnet 7 and the intervening member 73 while holding the gap in the tube with the gap 6. Can be adjusted.
  • the mounting position of the magnet 7 (the distance from the iron-containing sphere 8) can be adjusted, and the attraction force of the magnet 7 to the iron-containing sphere 8 can be adjusted. it can.
  • the magnetic force of the magnet 7 is an example using a permanent magnet of about 30.8 gf / cm 2 with the weight of the iron-containing sphere 8 being about 5 g.
  • Figures 1, 9, and 11 are shown.
  • the magnet is made of a hard magnetic material made of Alnico R-Co; Ba ferrite, or a soft magnetic material made of Fe—Si; Mn—Zn ferrite. Although a hard magnetic material can be used, a hard magnetic material is preferred.
  • a mold-proof resin is used for each component of the box and the pressure relief valve, such as a water vapor transfer control device and an airtightness inspection device, and a grease-proof agent or a water-repellent agent is used for the surface.
  • a temperature indication paint may be applied to an appropriate part (particularly, a ventilation path of a pressure relief valve) and the like, and an abnormal temperature may be displayed.
  • FIG. 13 is a graph showing the test results of the limit pressure of the pressure relief valve of the present invention.
  • Line C 1 Limit pressure when two magnets 7, 7 are placed below iron-containing sphere 8
  • Line C 2 Limiting pressure when one magnet 7 is arranged above the iron-containing sphere 8 via a spacer 79
  • Line C 3 Limit pressure when one magnet 7 is arranged below iron-containing sphere 8 via spacer 79 (third embodiment)
  • Line C 4 Limit pressure when two magnets 7, 7 are arranged above iron-containing sphere 8 (first embodiment)
  • Line C 5 Limit pressure when one magnet 7 is placed above and below iron-containing sphere 8
  • the limit pressure is high when the magnet 7 is approaching the iron-containing sphere 8, and the limit pressure decreases as the magnet 7 moves away from the iron-containing sphere 8.
  • the distance between the magnet 7 and the iron-containing sphere 8 and the valve seat 49 can be adjusted by the distance adjusting means, and the mounting position of the magnet 7 (iron-containing It can be understood from FIG. 13 that the attraction force of the magnet 7 to the iron-containing sphere 8 can be adjusted by adjusting the distance between the sphere 8 and the sphere 8.
  • the limit pressure is gradually reduced as the magnet 7 moves away from the iron-containing sphere 8.
  • the shapes of the line C 3, the line C 4, and the line C 5 are preferable.
  • the pressure relief valve according to the present invention can be used when the internal local abnormal pressure of the steam transfer control device, the humidifying device, the dehumidifying device, and the airtightness inspection device used at the time of setting them is generated. Abnormal pressure can be released and membrane breakage can be prevented. Also, since the adsorbing force of the magnet 7 on the iron-containing sphere 8 can be adjusted, the limit pressure of the pressure relief valve can be adjusted.
  • a water vapor transfer control device for example, one type of water vapor according to a predetermined standard is used.
  • a movement control device and adjusting the limit pressure of the pressure relief valve at this time one type of water vapor movement control device can be applied to a box having different sizes, installation environments, and materials.
  • the pressure safety valve may be operated within a range L1 further inside the safe use range L of the membrane, Also, the pressure relief valve may be operated in a range exceeding the safe use range L as long as the pressure is within the decompressible pressure range L 2.
  • a steam transfer control device a humidifier, a dehumidifier, and a steam transfer device associated with a change in steam transfer characteristics due to destruction or rapid deterioration of the boundary between steam and air transfer, and
  • an internal local abnormal pressure such as an airtightness inspection device used at the time of setting is generated, the abnormal pressure can be released to prevent the membrane from being damaged.
  • the magnet since the magnet keeps a distance from the iron-containing sphere and the valve seat, it may be adhered to the magnet due to magnet powder or magnetically attracted substances (iron powder, etc.). Therefore, it is possible to prevent the surface of the iron-containing sphere from being soiled, and to prevent the generation of magnet powder caused by the movement of the sphere.
  • the cutting powder generated by the wear of the magnet and the iron-containing sphere is absorbed by the magnet, so that the airtightness between the valve seat and the iron-containing sphere is not hindered.
  • the valve operation can be performed at extremely low pressure.
  • the magnet and the iron-containing sphere are separated from each other at a distance where they do not come into contact with each other, i.e., the distance between the magnet and the iron-containing sphere is maintained even at the time of closest approach, so that the iron-containing sphere may be magnetized.
  • the suction force of the sphere to the valve seat does not decrease.
  • the iron-containing sphere, the valve seat, and the magnet are electrically insulated, and the iron-containing sphere has a small movement distance.
  • the adsorption force to the valve seat is stable and hardly changes over time.
  • the separation adjusting means since the separation adjusting means is provided, the magnetic force for adsorbing the iron-containing sphere to the valve seat and keeping the iron-containing sphere in close contact with the magnet is a delicate distance between the iron-containing sphere and the magnet.
  • the valve operation can be performed at an extremely low pressure, and the operating threshold value required for the operation of the used equipment can be adjusted appropriately. Can be.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

A pressure relief valve for preventing malfunction of a steam movement controller, or the like, due to artificial erroneous application or an unexpected inevitable abnormality as much as possible. The pressure relief valve relieves an abnormal pressure occurring in an apparatus being used, e.g. a box K with a steam movement controller S, to the atmosphere. The pressure relief valve establishes/cuts off communication between a ventilation path (45) and an exhaust path (60) using a ball (8) containing iron, wherein a magnet (7) is employed as means for keeping the ball containing iron in close contact with a valve seat (49). The magnet is disposed to be spaced apart from the ball containing iron and the valve seat with the ball containing iron kept in contact with the valve seat, and a magnetic force for attracting the ball containing iron to the valve seat and holding them tightly is regulated to a threshold value required for the operation of the apparatus being used.

Description

明細 圧力安全弁 技術分野  Description Pressure relief valve Technical field
本発明は、 人為的な適用の過誤や、 不可避な予測外の異常に よって、 水蒸気移動制御装置、 除湿装置、 加湿装置、 ならびに これらの設定に使用する気密性検査装置 (以下、 「被使用装置」 という) の機能性を保全するために使用する圧力安全弁に関す る。  The present invention relates to a water vapor transfer control device, a dehumidifying device, a humidifying device, and an airtightness inspection device (hereinafter referred to as a “used device”) used for the setting thereof due to a human error in application or an unavoidable unexpected abnormality. ”) To use the pressure relief valve to maintain the functionality of the pressure relief valve.
すなわち、 これらの被使用装置が起因とな り、 機能不全を可 及的に予防するために使用する圧力安全弁に関する。 背景技術  That is, the present invention relates to a pressure relief valve which is used to prevent malfunctions caused by these used devices as much as possible. Background art
透湿膜体を利用 して箱体内部の調湿を行なう よう にした水蒸 気移動制御装置について、本発明者において既に提案している。  The present inventor has already proposed a water vapor transfer control device that uses a moisture permeable membrane to control the humidity inside the box.
この水蒸気移動制御装置は、 例えば、 図 1 4 に示すよう に、 内端口 1 0 を箱体 Kの内部に連通させ、 外端口 1 1 を外気に開 放させるよう にした筒体 1 の内部が、 3枚の透湿膜体 (第 1膜 M l、 第 2膜 M 2、 第 3膜 M 3 ) によって 2室の小室 2 1 , 2 2 に区画され、 各透湿膜体 M (以下、 第 1膜 M 1、 第 2膜 M 2 、 第 3膜 M 3 を総称する場合は符号 Mとする) には、 その内側面 及び外側面に対向してそれそれ熱伝導性が異なる 孔体 3 1 , 3 2 , 3 3 (例えば、 金属メ ッシュ、 合成樹脂メ ヅ シュ等) が 膜支持構造物として設けられたものになっている。 前記 3枚の透湿膜体 Mとしては、 透湿性が低く吸水性が高い ナイ ロ ン性の不織布を用いた第 1膜 M 1 と、 透湿性が高く吸水 性が低いポリオレフ ィ ン等の織布を用いた第 2膜 M 2及び第 3 膜 M 3が用いられ、 これらの第 1膜 M l、 第 2膜 M 2、 第 3膜 M 3は外気からの水蒸気の侵入を防止するために、 外端口 1 1 に向いた外側面がポ リエチレンによる撥水層に形成されている, このような水蒸気移動制御装置、 除湿装置、 加湿装置にあつ ては、 少な く とも 2枚の平膜状の透湿可能な防水膜を使用した 水蒸気や空気の移動の境界面を構成する境界部からなる少な く とも 1小室を構成要素と し、 また、 この小室構造を形成する平 膜状の透湿可能な防水膜の近傍または小室内または通気路に、 導電性多孔体または熱伝導性の異なる多孔体を配置して、 水蒸 気移動の特性や空気の移動特性を通気路の熱容量の異なる物質 の配置によって調整する よう になっている。 これらの構成要素 の共通事項と して、 平膜状の透湿膜の使用がある。 For example, as shown in FIG. 14, this water vapor transfer control device has a cylindrical body 1 in which an inner end port 10 communicates with the inside of a box body K and an outer end port 11 is opened to the outside air. , Three moisture permeable membranes (the first membrane Ml, the second membrane M2, and the third membrane M3) are divided into two small chambers 21 and 22. The first film M 1, the second film M 2, and the third film M 3 are collectively referred to as a symbol M). 1, 32, 33 (for example, metal mesh, synthetic resin mesh, etc.) are provided as membrane support structures. As the three moisture-permeable membranes M, a first membrane M1 using a nonwoven nonwoven fabric having low moisture permeability and high water absorption, and a woven material such as polyolefin having high moisture permeability and low water absorption. A second film M2 and a third film M3 using cloth are used.The first film Ml, the second film M2, and the third film M3 are used to prevent invasion of water vapor from outside air. The outer surface facing the outer end port 11 is formed of a water-repellent layer made of polyethylene. At least two flat membranes are used for such a water vapor transfer control device, dehumidifier, and humidifier. At least one small chamber consisting of a boundary part that constitutes a boundary surface for the movement of water vapor and air using a moisture-permeable waterproof membrane made of Place a conductive porous body or a porous body with different thermal conductivity near a possible waterproof membrane, in a small room, or in a ventilation path. Therefore, the characteristics of water vapor transfer and air transfer characteristics are adjusted by the arrangement of substances having different heat capacities in the ventilation path. A common feature of these components is the use of a flat membrane-like moisture permeable membrane.
使用に適した透湿膜と して、 主と して大きな通過空気量や通 過水蒸気量を得るために、 水蒸気の直径といわれている 0. 0 0 0 4 im (繊維便覧 : 第 2版 : 平成 7年 2月 1 5 日発行 : 丸 善 社団法人繊維学会 : p . 5 2 3 ) よ り も大きな 1. 0, 1 . 2, 1 . 5 zmなどの平均孔径を有する膜を使用している。  In order to obtain a large amount of passing air and a large amount of passing water vapor, it is said that the diameter of the water vapor is 0.000 im (Fiber Handbook: 2nd edition) : Published on February 15, 1995: Maruzen Institute of Textile Sciences: p. 5 2 3) A membrane with an average pore size of 1.0, 1.2, 1.5 zm, etc. ing.
一般に、 透湿や防水機能を得るには、 水蒸気の直径よ り も大 き く、 雨滴の直径といわれている 1 0 0〜 6 0 0〃mよ り も小 さな微細孔を持てばよいとされている。  Generally, in order to obtain moisture permeability and waterproof function, it is necessary to have micropores larger than the diameter of water vapor and smaller than 100 to 600 m, which is called the diameter of raindrops It has been.
ところで、 水蒸気移動制御装置、 除湿装置、 加湿装置にあつ ては、 微小な温度変化を、 水蒸気や空気の移動特性の変化に応 用しやすい平膜状の透湿可能な撥水性をもつ防水性膜の表面温 度の変化に反映する よう に使用する。 さ らに、 これらの条件を 満足し、 かつ、 コス トダウンが可能な素材を選択するために、 従来使用されている伸縮性を有し、 剛性に劣る織物生地ゃ不織 布を使用した繊維基材のー側面に、 撥水性物質や電気的な誘電 性物質 (絶縁性物質でかつ吸水性の低い物質) を接着や融着そ の他の手段による表面加工を施して一体化した素材が使用され ている。 By the way, the water vapor movement control device, dehumidification device, and humidification device respond to minute changes in temperature in response to changes in the movement characteristics of water vapor and air. It is used to reflect changes in the surface temperature of a flat, easy-to-use, water-permeable, water-repellent membrane that is permeable to moisture. In addition, in order to select a material that satisfies these conditions and can be reduced in cost, a conventionally used stretchable and inferior rigid woven fabric / fiber fabric using non-woven fabric is used. A material that is made by integrating a water-repellent substance or an electric dielectric substance (insulating substance and a substance with low water absorption) on the side of the material by bonding, fusing or other surface treatment It has been.
水蒸気移動制御装置、除湿装置、加湿装置などの調湿機能は、 単位時間あた り に処理できる水蒸気の移動量や空気の移動の境 界をなす、 透湿膜の透湿性や通気性を、 通過する水蒸気による 繊維素材や撥水面の吸湿性を活用して調整している。  The humidity control functions of the water vapor transfer control device, dehumidifier, humidifier, etc., control the amount of water vapor that can be processed per unit time and the air permeability, which limit the amount of water vapor that can be processed per unit time. The adjustment is made using the moisture absorption of the fiber material and the water-repellent surface due to the passing water vapor.
この調整手段と しては、 透湿膜の通気性や透湿性の異なる透 湿膜の小室を形成する配置関係によって生じる、 断熱的な考察 による圧縮や膨張にともなう温度変化に対して、 常時発生して いる熱交換の効率の調整を、 熱伝導性の異なる物質を多孔体や 'J、室の構造物などを活用して、 調整している。  This adjusting means is constantly generated in response to temperature changes due to compression and expansion due to adiabatic consideration, which are caused by the permeability of the moisture permeable membrane and the positional relationship that forms the small chamber of the moisture permeable membrane having different moisture permeability. The efficiency of the heat exchange is adjusted using materials with different thermal conductivity, such as porous materials, 'J's, and room structures.
そこで、 適正な適用の調湿対象となる空間の容積や、 調湿対 象となる空間の温度変化条件、 設定する高度による影響として 気圧条件などを考慮した、 適正の適用条件の範囲に適用する必 要がある。  Therefore, it is applied to the range of appropriate application conditions, taking into account the volume of the space to be properly humidified, the temperature change condition of the space to be humidified, and the atmospheric pressure condition as the effect of the set altitude. There is a need.
も しも、 適正な使用範囲に逸脱した適用を行った場合、 例え ば適用範囲を超えた容積への適用や、 適用範囲を超えた温度変 化環境への適用によって生じる、 使用安全範囲を超えた過剰な 圧力変化による膜体の変形や緊張、 しいては早期破損が、 前述 した繊維素材に加工された撥水性素材 (誘電性が高く吸水性が 低い物質) による撥水面の物理的な断裂や亀裂などの破壊現象 や、 繊維素材の引き裂き断裂などの透湿膜基材自体の破損が膜 体に生じ、 調湿機能や除湿機能、 加湿機能などの水蒸気移動制 御の機構に障害が生じる。 If the application is out of the proper range of use, it may exceed the safe use range caused by, for example, application to a volume beyond the applicable range or to a temperature change environment beyond the applicable range. Deformation and tension of the membrane due to excessive pressure change, and also early damage, Phenomena such as physical tearing or cracking of the water-repellent surface due to water-repellent materials (substances with high dielectric properties and low water absorption) processed into woven fiber materials, as well as moisture-permeable membrane substrates such as tearing and tearing of fiber materials Damage to the membrane causes damage to the water vapor transfer control mechanisms such as the humidity control function, dehumidification function, and humidification function.
また、透湿膜体は、図 1 5 に示すよう に、使用当初(線 A 1 )、 5年使用 (線 A 2 )、 0年使用 (線 A 3 ) という絰時的変化によ る変化をとげる一例を示した。 この経時的変化は、 水蒸気移動 制御装置を設定する環境の、 空気の清浄度によって影響を受け る。  As shown in Fig. 15, the moisture permeable membrane changes over time due to the initial use (line A1), 5-year use (line A2), and 0-year use (line A3). An example is shown. This change over time is affected by the cleanliness of the air in the environment in which the steam transfer controller is set.
すなわち、 透気性が最も小さな膜体を始めと して、 その他の 透湿膜も、 膜体内に存在する複雑な形状の細孔の内部が通気路 と して活用され、 これらの細孔の内部は通過する空気中に含ま れる塵埃やオイルミス トなどの空気汚濁物質によって次第に汚 染を受ける。  In other words, the membranes with the smallest air permeability and other moisture-permeable membranes also utilize the inside of the complex-shaped pores existing in the membrane as air passages, and the inside of these pores Is gradually contaminated by air pollutants such as dust and oil mist contained in the passing air.
このよう に、 透湿膜の細孔が空気汚濁物質によって汚染して 目詰ま りを生じる と、 図 1 6 の線 B 1 で示すよう に、 次第に伸 びが大きく なる し、 目詰ま り を生じていない正常な状態でも、 線 B 2で示すよう に、 反復使用によって次第に伸びが大き く な つて しまう。  When the pores of the moisture permeable membrane are contaminated by air pollutants and become clogged, as shown by the line B1 in FIG. 16, the elongation gradually increases and clogging occurs. Even under normal conditions, repeated use results in progressively greater elongation, as shown by line B2.
又、 図 1 7で示すよう に、 膜体を安全使用範囲を越える大き さの箱体に間違って使用した場合、 その箱体の呼吸量が大きい 為、 安全使用範囲を越えた与圧が膜体に加わ り、 膜体の破壊に つながるこ とがある。  Also, as shown in Fig. 17, if the membrane is used by mistake in a box whose size exceeds the safe use range, the respiratory volume of the box will be large, and the pressurization beyond the safe use range will result in the membrane being pressurized. In addition to the body, it can lead to destruction of the membrane.
前述したよう に、 適正の適用条件の範囲に逸脱した適用や、 経時的変化による膜体の汚染などによって、 撥水素材を支持す る繊維素材の伸展に伴った、 水蒸気や空気の移動量を制限する ために使用している通気路となる膜体内部の細孔を形成する撥 水素材の断裂や破損が、 早期に発生する。 このような撥水素材 を支持する繊維素材の伸展に伴う撥水(防水性)素材と しては、 安価な物質としてポ リ エステル、 ポ リ エチレ ンや四フ ッ化工チ レンなどが使用されているが、 水蒸気移動制御装置と しての機 能を達成するために必要な、 安全範囲を逸脱した場合に必要な 対策例として、 機能異常を示す指示装置を備えた調湿装置があ つた。 As mentioned above, application outside of the scope of proper application conditions, Due to contamination of the membrane due to changes over time, etc., the fineness inside the membrane that becomes the ventilation path used to restrict the amount of movement of water vapor and air due to the expansion of the fiber material supporting the water repellent material The water-repellent material that forms the pores is ruptured or damaged early. As the water-repellent (waterproof) material accompanying the extension of the fiber material that supports such water-repellent materials, polyester, polyethylene, tetrafluoroethylene, etc. are used as inexpensive substances. However, as an example of a measure necessary to achieve the function as a water vapor transfer control device when it deviates from the safe range, there was a humidity control device equipped with an indicator that indicates a malfunction. .
しかし、 広範な用途への適用によ り、 設計者にとっても思わ ぬ障害が、 施工過誤ゃパッキンやシールなどの経年劣化を起因 と して発生して しま う こ とも考え られる。 例えば、 不完全なシ ール作業や、 シールの早期異常破損などが真菌や苔、 微小生物 などによ り加速的に発生する場合、 電線配管経路からの異常な 水蒸気の流入や、 漏水なども発生する ことも考えられる。  However, due to the application to a wide range of applications, unexpected failures for designers may occur due to construction errors due to aging of packings and seals. For example, if incomplete sealing work or premature abnormal breakage of seals is accelerated due to fungi, moss, microscopic organisms, etc., abnormal inflow of water vapor from electric conduits or leakage It can also occur.
このよう な透湿膜への過剰な負担を避ける手段としては、 As a means to avoid such an excessive burden on the moisture permeable membrane,
( 1 ) 導電性多孔体や保温性多孔体などの膜支持構造物の水蒸 気移動制御装置内の通気路内への配置位置の、 調湿空間による 呼吸現象を考慮し、 調湿性能にとって最低限の調湿機能を確保 するための透湿膜や熱伝導性の異なる多孔体の配置によって熱 容量ならびに水蒸気や空気の移動機序の熱力学的な調整を行う とともに物理的な支持機構と して活用 して、 物性の保護を目的 と した使用上の矛盾が発生しに く い状態に保つ。 (1) Consider the breathing phenomenon caused by the humidity control space at the position where the membrane support structure such as the conductive porous material and the heat insulating porous material is placed in the ventilation path in the water vapor transfer control device, and The arrangement of moisture permeable membranes and porous materials with different thermal conductivities to secure the minimum humidity control function enables thermodynamic adjustment of the heat capacity and the transport mechanism of water vapor and air, as well as a physical support mechanism. To ensure that there is no inconsistency in use for the purpose of protecting physical properties.
( 2 ) 導電性多孔体や保温性多孔体などの膜支持構造物の膜表 面に配向する側の形状の適正化と位置関係の調整を行う。 (2) Membrane surface of membrane support structure such as conductive porous body and heat insulating porous body The shape on the side oriented to the plane is adjusted and the positional relationship is adjusted.
( 3 ) 導電性多孔体や保温性多孔体などの膜支持構造物も含め た、 通気路内の最も通気性や透湿性の小さな膜部の意図的な変 化を必要とする条件下におかれた通気性や透湿性の強制的な確 保手段と しての、 意図的な同部の脱落または穿孔などが使用さ れている。  (3) Under the conditions that require intentional change of the smallest air-permeable and moisture-permeable membrane in the ventilation path, including the membrane support structure such as the conductive porous body and the heat insulating porous body. Intentional drop-out or perforation of the part is used as a means of forcing proper ventilation and moisture permeability.
( 4 ) 機能異常を示す指示装置を備えた調湿装置がある。  (4) There is a humidity control device equipped with an indicating device that indicates a malfunction.
これらは、 水蒸気移動制御装置が起因とな り、 保護の対象と した機器の障害に至る調湿効果の減弱などが生じる場合には、 最も通気性や透湿性が小さな膜部がス ト レスを受ける条件下に あることになる という特性を活用している。 例えば、 水蒸気移 動制御装置の調湿機能は、 単位時間あた り に処理できる水蒸気 の移動量や空気の移動の境界をなす、 透湿膜の透湿性や通気性 によって、 適正な適用の調湿対象となる空間の容積や、 調湿対 象となる空間の温度変化条件、 設定する高度による影響と して 気圧条件などを考慮した、 適正条件の範囲に適用する必要があ る。 も しも、 適正な使用範囲に逸脱した適用を行った場合、 適 用範囲を超えた容積への適用や、 適用範囲を超えた温度変化条 件への適用による、 使用安全範囲を超えた過剰な圧力による膜 体の変形や緊張、 しいては早期破損が、 最も小さな通気性や透 湿性を有する透湿膜又は目づま り を生じた膜体に対して発生す る可能性が最も高いことを活用している。  These are caused by the water vapor transfer control device, and when the humidity control effect is reduced, which may cause damage to the equipment to be protected, etc., the membrane with the smallest air permeability or moisture permeability reduces stress. It takes advantage of the characteristic that it will be under the conditions it receives. For example, the humidity control function of the water vapor transfer control device adjusts the appropriate application depending on the amount of water vapor that can be processed per unit time and the air permeability that forms the boundary of air movement. It must be applied within the range of appropriate conditions, taking into account the volume of the space to be wet, the temperature change condition of the space to be humidified, and the atmospheric pressure as the effect of the altitude to be set. If the application is out of the proper range of use, it may be applied to a volume that exceeds the applicable range or to a temperature change condition that exceeds the applicable range. Deformation or tensioning of the membrane due to extreme pressure, and thus premature breakage, is most likely to occur on the smallest permeable or permeable membrane or the membrane that has clogged. We are utilizing.
同様に、 経時変化や経年変化、 異常な空気汚染環境下への適用 による、 水蒸気移動制御装置の通気路の汚損によ り発生する通 気性や透湿性の低下も、 最も小さな通気性や透湿性を有する透 湿膜にたい して発生する可能性が最も高いことを活用している < そこで、 この異常な状態のままで放置するこ とによる為害作 用を、 そのような異常な状態になった場合には直ちに除去する 必要があ り、 かつ、 できれば調湿効果やわずかな除湿効果をレ ベルダウン しても、 保護の対象と した機器の保全を優先するた めに、 機器を保護するために使用する水蒸気移動制御装置とし ては、 フ ェイルセーフ機構を保持する必要がある という前提か らこれらの対策は起案された。 Similarly, the deterioration of air permeability and moisture permeability caused by contamination of the air passage of the water vapor transfer control device due to aging, aging, and application to abnormal air pollution environments has the smallest permeability and moisture permeability. Transparent with We take advantage of the highest possibility of occurrence for a wet film.Therefore, if this abnormal state is caused by leaving it in this abnormal state, Must be immediately removed and, if possible, used to protect equipment in order to prioritize the protection of the protected equipment, even if the humidity control and slight dehumidification effects are reduced These countermeasures were drafted on the premise that the steam transfer control device must have a fail-safe mechanism.
しかし、 これらの対象とする透湿膜部の穿孔や離脱による補 助的な機能保護手段には短所と して、 補助的な機能保護手段の 機能性を発揮するための、 圧力変化量と しての動作しきい値に 大きなばらつきが生じて しまう場合がある という問題がある。 また、 穿孔や離脱が発生するために必要な圧力の動作しきい値 を適切な使用には影響しない範囲に設定する必要があ り、 経時 的な材質の劣化や弾性変化、汚損などの影響も複雑に絡むので、 摩擦や弾性に依存した手段を用いる場合には、 圧力の動作しき い値を設定する範囲の決定が難しい。 また、 これらの動作しき い値は、 調湿や加湿、 除湿などの対象となる空間の容積や、 こ の空間のおかれた熱力学的な環境などによって、 よ り広範な適 用事例を対象とする場合には、水蒸気移動制御装置、加湿装置、 除湿装置、 これらの設定時に共通して使用しなければならない 気密性検査装置の設計や準備を、 多種類の適用事例に適応可能 な状態に調節した り、 または設計型式が増加して しまう という 短所がある。  However, there is a disadvantage to the auxiliary function protection means by perforating or detaching the target moisture permeable membrane, and the pressure change amount for exhibiting the functionality of the auxiliary function protection means is a disadvantage. There is a problem that a large variation may occur in all operation thresholds. In addition, it is necessary to set the operating threshold value of the pressure necessary for the occurrence of perforation and detachment within a range that does not affect the proper use. Because of the complexity involved, it is difficult to determine the range in which to set the pressure operating threshold when using means that rely on friction or elasticity. In addition, these operating thresholds may cover a wider range of application cases, depending on the volume of the space subject to humidity control, humidification, dehumidification, etc., and the thermodynamic environment in which this space is located. In this case, the design and preparation of the water vapor transfer control device, humidifying device, dehumidifying device, and the hermeticity inspection device, which must be used in common when setting these, should be adapted to various application cases. The disadvantage is that adjustments or design types increase.
また、 調湿を行う空間の扉の開閉を急激に行つた場合には、 この空間の圧力が急激に変化してしまい、 圧力 しきい値を低く 設定する と、 急激な扉の開閉によって、 透湿膜部の穿孔や離脱 が発生して しまう こ とがある という問題があった。 Also, if the door of the space where humidity is controlled is opened and closed rapidly, If the pressure in this space changes suddenly and the pressure threshold is set low, there is a problem that the opening and closing of the door may cause perforation or detachment of the moisture permeable membrane. Was.
さ らに、 多様化する電気機器の適用範囲の中で、 設計上特に 問題になる事項として、 電気箱またはケーシング内部の発熱量 の変化があげられる。 特に恒常的に動作する電気機器を収容す る電気箱またはケーシングにあっては、 電気機器から発生する 発熱量が一定にな り やすく 問題は生じに く い。 しかし、 非定時 間隔に動作を反復するような電気機器にあっては、 電気機器自 体の熱伝導性や発熱量、 熱伝達の対流や直接的熱伝導などが複 雑化し、 設計が煩雑で、 適用上の安全確保が困難である場合が ある。 このような場合にあっても、 保護を行うべき電気機器の 多く は、 ライ フ ライ ンを防護する主体である機器や、 補助的に 重要な設備機器を保護するこ とを目的と した機器であって、 適 用対象に制限が生じに く い対策が必要とされる。  In addition, among the diversifying applications of electrical equipment, a particular design issue is the change in the calorific value inside the electric box or casing. In particular, in the case of an electric box or a casing that contains a constantly operating electric device, the amount of heat generated from the electric device is likely to be constant, and no problem occurs. However, in the case of electrical equipment that repeats its operation at irregular intervals, the thermal conductivity and calorific value of the electrical equipment itself, convection of heat transfer, and direct heat conduction are complicated and the design is complicated. However, it may be difficult to secure safety in application. Even in such cases, most of the electrical equipment that needs to be protected is equipment that protects the lifeline or that is intended to supplement important equipment. Therefore, it is necessary to take measures that will not limit the scope of application.
この対策の対象とすべき主因は、 水蒸気や空気の移動の境界 部の破壊や急速な劣化による水蒸気移動特性の変化に伴う水蒸 気移動制御装置、 加湿装置、 除湿装置などの内部の局部的な異 常圧力の発生、 または水蒸気や空気の移動の境界部が絰年劣化 によって生じるこ とがある水蒸気や空気の移動特性の劣化の原 因となる表面汚損に起因した、水蒸気移動制御装置、加湿装置、 除湿装置などの内部または調湿、 加湿、 除湿機構の通過機構と しての異常圧力の発生である。 すなわち、 設定の過誤や絰年劣 化に伴う変化は、 呼吸現象の低下と して現れ、 移動する空気や 水蒸気の、 圧力の特性変化に影響する。 そこで、 特定の水蒸気移動制御装置、 加湿装置、 除湿装置な どの性能に合わせて作成された、 機構的な構造による安価で動 作の安定性が期待できる圧力を緩衝する手段が必要になる。 こ の方法に類似した発想では、 既にアキュムレータを内蔵した除 湿装置として考案されている。 しかし、 経時的変化にとって、 アキュムレータに使用される弾性体自体の弾性率の劣化や物性 の変質、 ピンホールの発生などが生じて しまう こ とがある とい う問題があった。 また、 熱力学的な水蒸気の移動促進にとって 不利なタイ ミ ングで調湿、 除湿、 加湿などを行う空間の内部の 発熱などが発生した場合には、 空間の水蒸気圧の影響が調整量 を上回 り、 悪作用して しまう こ とがあった。 The main factors that should be addressed are measures such as control of water vapor transfer, humidifiers, and dehumidifiers associated with changes in water vapor transfer characteristics due to destruction of the boundaries of water vapor and air movement and rapid deterioration. Water vapor transfer control device, which is caused by abnormal pressure or surface contamination that causes deterioration of water vapor or air movement characteristics, which may be caused by deterioration of the boundary of water vapor or air movement for a long time. The occurrence of abnormal pressure inside the humidifier, dehumidifier, etc., or as a passage mechanism for humidity control, humidification, and dehumidification mechanisms. In other words, a change due to an incorrect setting or aged deterioration appears as a decrease in respiratory phenomena, and affects a change in pressure characteristics of moving air or water vapor. Therefore, there is a need for a mechanism that buffers inexpensive and stable operation by means of a mechanical structure that is tailored to the performance of a specific water vapor transfer control device, humidifier, dehumidifier, etc. An idea similar to this method has already been devised as a dehumidifier with a built-in accumulator. However, there has been a problem that the change over time may cause deterioration of the elastic modulus of the elastic body itself used for the accumulator, deterioration of physical properties, and generation of pinholes. In addition, if heat is generated inside the space where humidity control, dehumidification, or humidification occurs at a timing that is disadvantageous for promoting thermodynamic water vapor transfer, the effect of the water vapor pressure in the space increases the amount of adjustment. In some cases, it had an adverse effect.
また、 弾性ゴム体などの蓋形状の弁や、 自転車などに使用さ れる虫ゴムなどでは、弾性体の経時的変化に伴って硬化した り、 変質した弾性体成分が弁の離開を妨げる場合があ り、 動作しき い値にばらつきが大き く なる という短所があった。  In the case of lid-shaped valves such as elastic rubber bodies and insect rubber used in bicycles, etc., the elastic bodies may harden with the aging of the elastic bodies, and the deteriorated elastic body components may hinder the opening of the valves. There was a drawback that the operating thresholds had large variations.
本発明の圧力安全弁は、 上記のような問題を解決するために 提案するもので、 前述したよ うな、 水蒸気移動制御装置の通気 路を形成する透湿膜 (透湿可能な防水膜) の予定された使用期 限を超えて用いられた後に生じる可能性がある、 透湿膜などの 汚損による調湿性能の失調を予防する。  The pressure relief valve of the present invention is proposed to solve the above-described problems, and is scheduled to have a moisture-permeable membrane (a moisture-permeable waterproof membrane) that forms an air passage of the steam movement control device as described above. Prevent dysfunction of humidity control performance due to fouling of moisture permeable membranes that may occur after use beyond the specified usage period.
また、 適用用途の人為的な錯誤による調湿性能の悪化に対し て、 たとえば、 調湿空間の蓋や扉などの急激な開け閉めによつ て、 水蒸気移動制御装置、 除湿装置、 加湿装置の設定が行なわ れた空間への異常圧力が生じた り、 またはこれらの設定時に使 用する気密性検査装置が起因とな り、 悪作用が生じるこ とを予 0 防する。 In addition, against the deterioration of humidity control performance due to human error in the application, for example, by suddenly opening and closing the lid or door of the humidity control space, the water vapor transfer control device, dehumidifier, humidifier It is anticipated that abnormal pressures will occur in the space in which the settings are made, or that the airtightness inspection equipment used in these settings will cause adverse effects. 0 Prevent.
さ らに、 水蒸気移動制御装置や除湿装置、 加湿装置などの適 用範囲を広範に広げる場合にも、 達成可能な水蒸気や空気の調 整機構の多岐にわたる設計変更を必要とせず、 適用型式を簡素 化しコス トダウンが可能である。  Furthermore, even when the applicable range of a steam transfer control device, a dehumidifying device, a humidifying device, and the like is widened, the design model of the achievable steam and air adjusting mechanism is not required, and the applicable model is not changed. Simplification and cost reduction are possible.
さ らに、 前述した水蒸気や空気の移動の境界部の破壊や急速 な劣化による水蒸気移動特性の変化に伴う水蒸気移動制御装置 加湿装置、 除湿装置、 およびこれらの設定時に使用する気密性 検査装置などの、 内部の局部的な異常圧力の発生を予防する。  In addition, a steam transfer control device that accompanies changes in steam transfer characteristics due to the destruction of the boundary between steam and air movement and rapid deterioration described above, a humidifier, a dehumidifier, and an airtightness inspection device used when setting these Prevent the occurrence of local abnormal pressure inside.
この圧力安全弁の特徴と しては、 圧力の動作しきい値が例え ば 5 c m水柱のような低い値で動作させるこ とができ、 又、 1 m〜 l . 5 m水中のような高い圧力まで調節して変化でき、 か つ長期にわたる使用によっても、 動作しきい値となる圧力条件 は変化しに く く、劣化速度が遅く安定して使用することができ、 使用する水蒸気移動制御装置、 除湿装置、 加湿装置などの動作 特性に必要な、 圧力の動作しきい値を保つこ とができる。 これ らの劣化速度は、 例えば、 スプリ ングを用いた一般的な弁機構 では、 スプリ ング自体の弾力性の変化が大き く、 又、 スプリ ン グ自体の金属腐食の問題であった。 発明の閧示  The feature of this pressure relief valve is that it can be operated at a low pressure threshold such as 5 cm water column and high pressure such as 1 m to 1.5 m water. The pressure condition, which is the operating threshold value, does not change even after long-term use, and the rate of deterioration is slow, so that it can be used stably. It can maintain the pressure operation threshold required for the operation characteristics of dehumidifiers and humidifiers. For example, in a general valve mechanism using a spring, these deterioration rates are largely caused by a change in elasticity of the spring itself and a problem of metal corrosion of the spring itself. Invention
上記の課題を解決するために、 本発明の圧力安全弁 (請求項 1 ) は、  In order to solve the above-mentioned problems, the pressure relief valve of the present invention (Claim 1)
水蒸気移動制御装置を備えた箱体や水蒸気移動制御装置の設 定に使用する気密性検査装置等を被使用装置と し、 この被使用 装置に生じた異常圧力を大気開放させるための圧力安全弁であ つて、 A box equipped with a water vapor transfer control device, an airtightness inspection device used for setting the water vapor transfer control device, and the like are used devices. A pressure relief valve for releasing abnormal pressure generated in the device to the atmosphere.
—端が被使用装置に接続される と共に他端の通気口が弁室内 に開口された通気路と、 一端が大気に連通される と共に他端の 排気口が弁室内に開口された排気路とがシ リ ンダー内に該シ リ ンダ一の軸方向に形成され、  —A vent passage with one end connected to the equipment to be used and a vent at the other end open into the valve chamber, and an exhaust passage at one end communicating with the atmosphere and an exhaust port at the other end open into the valve chamber. Are formed in the cylinder in the axial direction of the cylinder,
前記弁室内に弁体と しての鉄含有球体が収容され、 この鉄含 有球体が、 常時は前記通気口を囲む状態に形成された弁座に密 着した状態に保持されて通気路と排気路との連通を遮断させ、 一方、 被使用装置に異常圧力が生じる と、 弁座から離反して通 気路と排気路を連通させるように形成された圧力安全弁であつ て、  An iron-containing sphere as a valve element is accommodated in the valve chamber, and the iron-containing sphere is normally kept tightly attached to a valve seat formed so as to surround the ventilation port, and is provided with a ventilation path. A pressure relief valve that is configured to cut off communication with the exhaust path, and separate from the valve seat to allow communication between the air path and the exhaust path when abnormal pressure occurs in the device to be used.
前記鉄含有球体を前記弁座に密着した状態に保持させる手段 として磁石が用いられ、  A magnet is used as means for holding the iron-containing sphere in close contact with the valve seat,
この磁石は、前記鉄含有球体が弁座に密着した状態において、 鉄含有球体及び弁座から離隔をおいて配置され、  The magnet is arranged at a distance from the iron-containing sphere and the valve seat in a state where the iron-containing sphere is in close contact with the valve seat,
前記鉄含有球体を弁座に吸着して密着保持させるための磁力 が、 前記被使用装置の動作上要求される動作しきい値に調整さ れている構成と した。  The magnetic force for attracting and holding the iron-containing sphere in close contact with the valve seat is adjusted to an operation threshold value required for the operation of the used device.
従って、 この圧力安全弁 (請求項 1 ) では、 磁石が鉄含有球 体及び弁座と離隔を保つので、 磁石に付着する こ とがある磁石 粉末や被磁性吸引物質 (鉄粉など) によって、 鉄含有球体の表 面が汚損されるこ とを予防し、 球体の移動によって生じる磁石 粉末の生成を予防するこ とができる。  Therefore, in this pressure relief valve (Claim 1), since the magnet keeps a distance from the iron-containing sphere and the valve seat, the magnet powder or the magnetically attracted substance (such as iron powder) that may adhere to the magnet causes the iron to be removed. The surface of the containing sphere can be prevented from being stained, and the generation of magnet powder caused by the movement of the sphere can be prevented.
また、 磁石の損耗や鉄含有球体の損耗によって発生した切削 粉が、 磁石に吸着されるため、 弁座と鉄含有球体との気密性を 妨げる こ とがない。 In addition, cutting caused by wear of magnets and wear of iron-containing spheres Since the powder is adsorbed by the magnet, the airtightness between the valve seat and the iron-containing sphere is not hindered.
また磁力を用いて、 鉄含有球体を弁座に密着させる構造であ るため、 弁動作が極く低圧で動作可能となる。  In addition, since the iron-containing sphere is brought into close contact with the valve seat using magnetic force, the valve operation can be performed at extremely low pressure.
又、磁石と鉄含有球体とは、接触するこ とがない距離、即ち、 最接近時でも鉄含有球体と磁石が距離を保つよう に距離をおく ので、 鉄含有球体が磁化する こ とがな く、 球体の弁座に対する 吸着力が低下するこ とがない。 即ち、 鉄含有球体と、 弁座並び に磁石は電気的に絶縁され、 又、 鉄含有球体の運動距離も小さ いので、 一時磁性体である鉄含有球体が磁化しに く く、 このた め、 弁座への吸着力は安定し、 経年変化しに く い。  Further, since the magnet and the iron-containing sphere are separated from each other at a distance where they do not come into contact with each other, that is, the distance between the magnet and the iron-containing sphere is maintained even at the time of closest approach, so that the iron-containing sphere is not magnetized. And the suction force of the sphere to the valve seat does not decrease. That is, the iron-containing sphere, the valve seat, and the magnet are electrically insulated, and the iron-containing sphere has a small movement distance, so that the iron-containing sphere, which is a temporary magnetic material, is not easily magnetized. The adsorption force to the valve seat is stable and hardly changes over time.
上記の請求項 1記載の圧力安全弁において、 前記通気路及び 排気路の途中に空気濾過手段 (フィ ル夕) が設けられている態 様 (請求項 2 ) がある。  In the pressure relief valve according to claim 1, there is a mode (claim 2) in which an air filtering means (filter) is provided in the middle of the ventilation path and the exhaust path.
このよう に、 空気濾過手段を設けるこ とによって、 被使用装 置や外気からの外来の被磁性吸引物質 (鉄粉等) などの汚損物 質 (空気中の汚染物質として排気ガスオイル、 塵埃、 小動物な ど) や磁石に付着することがある磁石粉末や磁性吸引物質 (鉄 粉など) が、 弁室内に侵入するのを防止できる。  In this way, by providing air filtration means, pollutants such as foreign magnetically attracted substances (iron powder, etc.) from the equipment to be used and the outside air (exhaust gas oil, dust, It can prevent magnet powder and magnetically attracted substances (iron powder, etc.) that may adhere to small magnets and magnets from entering the valve chamber.
上記の請求項 1又は 2記載の圧力安全弁において、 前記磁石 をシ リ ンダの軸方向に移動させて、 磁石と、 鉄含有球体及び弁 座との離隔距離を調整するための離隔調整手段が設けられてい る態様 (請求項 3 ) がある。  3. The pressure relief valve according to claim 1, further comprising a separation adjusting unit configured to move the magnet in an axial direction of the cylinder to adjust a separation distance between the magnet, the iron-containing sphere, and the valve seat. 4. There is an embodiment (claim 3).
このよ う に、 離隔調整手段を設けるこ とによ り、 鉄含有球体 を弁座に吸着して密着保持させるための磁力を、 鉄含有球体と 3 磁石との微妙な距離関係の調整によって調整するこ とができ、 弁動作が極く低圧で動作可能となる し、 被使用装置の動作上要 求される動作しきい値に的確に調整するこ とができる。 In this way, by providing the separation adjusting means, the magnetic force for attracting the iron-containing sphere to the valve seat and keeping it in close contact with the iron-containing sphere can be obtained. 3 It can be adjusted by adjusting the delicate distance relationship with the magnet, valve operation can be performed at extremely low pressure, and it can be adjusted accurately to the operation threshold required for the operation of the device to be used be able to.
上記の請求項 1又は 2又は 3記載の圧力安全弁において、 前 記磁石の取り付け位置を調整するためのスぺーザが設けられて いる態様 (請求項 4 ) がある。  In the above-mentioned pressure relief valve according to claim 1, 2 or 3, there is a mode (claim 4) in which a spacer for adjusting the mounting position of the magnet is provided.
このよう に、 スぺーサを設ける と、 磁石の取り付け位置を調 整でき、 磁石による鉄含有球体に対する吸着力を調整できる。  By providing the spacer in this way, the mounting position of the magnet can be adjusted, and the attraction force of the magnet to the iron-containing sphere can be adjusted.
上記の請求項 1 〜 4のいずれかに記載の圧力安全弁において. 弁室内に開口された排気口の内面に、 鉄含有球体の移動距離を 大き く するための凹部が形成されている態様 (請求項 5 ) があ る。  The pressure relief valve according to any one of claims 1 to 4, wherein a recess is formed on an inner surface of the exhaust port opened in the valve chamber to increase a movement distance of the iron-containing sphere. Section 5).
このよう に、 凹部を形成する と、 前記離隔調整手段による調 整幅を広く 取るこ とができる。  By forming the recesses in this way, the adjustment width by the separation adjusting means can be widened.
上記の請求項 1 〜 5のいずれかに記載の圧力安全弁において 弁座から離反した鉄含有球体が排気口を閉塞するのを防止する ために、 前記排気口の内面に排気路に連通する通気溝が形成さ れている態様 (請求項 6 ) がある。  The pressure relief valve according to any one of claims 1 to 5, wherein a vent groove communicating with an exhaust passage is provided on an inner surface of the exhaust port to prevent the iron-containing sphere separated from the valve seat from closing the exhaust port. (Claim 6).
異常圧力によって大きな通気量が瞬間的に生じて、 鉄含有球 体が弁座から離反したとき、 鉄含有球体によって排気口が閉塞 されることがある。 このよう に排気口が閉塞されると、 異常圧 力を逃がすことができな く な り、 被使用装置側に トラプルが生 じて しまう 。  When the iron-containing sphere separates from the valve seat due to the instantaneous generation of a large amount of ventilation due to abnormal pressure, the exhaust port may be blocked by the iron-containing sphere. When the exhaust port is blocked in this way, it becomes impossible to release the abnormal pressure, and a trap is generated on the used device side.
そこで、 通気溝を設けるこ とによって、 鉄含有球体によって 排気口が閉塞されたと しても、 異常圧力を、 この通気溝を介し て排気路に逃がすこ とができ る。 Therefore, by providing the ventilation groove, even if the exhaust port is closed by the iron-containing sphere, abnormal pressure is applied through this ventilation groove. To escape to the exhaust path.
上記の請求項 1 〜 6 のいずれかに記載の圧力安全弁において . 鉄含有球体の表面が防蝕加工されている態様 (請求項 7 ) があ る o  The pressure relief valve according to any one of claims 1 to 6, wherein the surface of the iron-containing sphere is subjected to corrosion-resistant treatment (claim 7).
このよう に、 鉄含有球体の表面を防蝕加工 (例えば、 テ フ 口 ン (登録商標) 加工、 ニッケルコバル トメ ヅキなどのメ ヅキ加 ェ) する と、 鉄含有球体球体の鯖び付きや表面が汚損するのを 防止できる し、 鉄含有球体の移動に伴う磁石粉末の生成を予防 する こ とができ る。  In this way, when the surface of the iron-containing sphere is subjected to corrosion-resistant processing (for example, Teflon (registered trademark) processing, plating with nickel cobalt plating, etc.), the surface of the iron-containing sphere sticks and the surface of the sphere becomes rough. It is possible to prevent fouling and prevent the generation of magnet powder due to the movement of the iron-containing sphere.
この場合、 鉄含有球体と して、 低質ステンレス鋼球によるべ ァ リ ング球などの表面不動能化防蝕層を有する材質が好ま しい なお、 鉄含有球体は、 磁性体にも変化する一時磁石であ り、 軟質 (ソ フ ト ) 磁性材料である。  In this case, as the iron-containing sphere, a material having a surface passivation and corrosion-resistant layer such as a ball bearing ball made of low-quality stainless steel ball is preferable.The iron-containing sphere is a temporary magnet that also changes into a magnetic material. Yes, it is a soft (soft) magnetic material.
上記の請求項 1 〜 7 のいずれかに記載の圧力安全弁において 弁座にフ ッ化ゴムによ るパッキンが装着されている態様 (請求 項 8 ) があ る。  In the pressure relief valve according to any one of claims 1 to 7, there is a mode (claim 8) in which packing made of fluorocarbon rubber is attached to a valve seat.
このよう に、弁座にフ ッ化ゴムによるノ ヅ キンを装着させる と、 鉄含有球体と弁座との気密性を確保でき、 弁座と鉄含有球体と の接触抵抗の軽減ゃ耐油性による劣化予防などの効果が得られ しきい値による動作が精密な弁構造にでき る。 図面の簡単な説明 In this way, when the valve seat is fitted with a fluorinated rubber knuckle, airtightness between the iron-containing sphere and the valve seat can be ensured, and the contact resistance between the valve seat and the iron-containing sphere is reduced. Effects such as deterioration prevention can be obtained, and operation with a threshold value can be performed with a precise valve structure. BRIEF DESCRIPTION OF THE FIGURES
図 1 は第 1 実施例の圧力安全弁を示す断面図である。  FIG. 1 is a sectional view showing the pressure relief valve of the first embodiment.
図 2 は圧力安全弁の使用状態を示す図である。  Fig. 2 is a diagram showing the operating state of the pressure relief valve.
図 3 は鉄含有球体と弁座との離反 · 密着状態を示す断面図で ある。 Figure 3 is a cross-sectional view showing the separation and close contact between the iron-containing sphere and the valve seat. is there.
図 4は鉄含有球体と弁座との離反 · 密着状態を示す断面図で ある。  FIG. 4 is a cross-sectional view showing the separated / close contact state between the iron-containing sphere and the valve seat.
図 5 は鉄含有球体と弁座との離反 · 密着状態を示す断面図で ある。  FIG. 5 is a cross-sectional view showing the separated / closed state between the iron-containing sphere and the valve seat.
図 6 はパッキンの弁座に対する取り付け構造の例を示す断面 図である。  FIG. 6 is a cross-sectional view showing an example of a mounting structure of the packing to the valve seat.
図 7はパッキンの弁座に対する取り付け構造の例を示す断面 図である。  FIG. 7 is a sectional view showing an example of a mounting structure of the packing to the valve seat.
図 8は弁室に形成した通気溝を示す斜視図である。  FIG. 8 is a perspective view showing a ventilation groove formed in the valve chamber.
図 9 は第 2実施例の圧力安全弁を示す断面図である。  FIG. 9 is a sectional view showing a pressure relief valve according to the second embodiment.
0 は圧力安全弁を水蒸気移動制御装置に組み付けた例を 示す断面図である。  FIG. 0 is a cross-sectional view showing an example in which the pressure relief valve is assembled to the steam movement control device.
1 は第 3実施例の圧力安全弁を示す断面図である。  FIG. 1 is a sectional view showing a pressure relief valve according to a third embodiment.
2 はこの圧力安全弁の使用状態を示す図である。 図 1 3 は低水圧試験装置を用いた圧力安全弁の限度圧力試験 の結果をグラフで示した図である。  FIG. 2 is a diagram showing a use state of the pressure relief valve. Figure 13 is a graph showing the results of a limit pressure test of a pressure relief valve using a low water pressure test device.
図 1 4は従来の水蒸気移動制御装置を示す断面図である。 図 1 5 は透湿膜体の経年変化による調湿能力の変化をグラフ で示した図である。  FIG. 14 is a sectional view showing a conventional water vapor transfer control device. Figure 15 is a graph showing the change in humidity control ability due to the aging of the moisture permeable membrane.
図 1 6は透湿膜体の伸びを時間変化で示した図である。  FIG. 16 is a diagram showing the elongation of the moisture permeable membrane as a function of time.
7は箱体に加わる圧力を日変化で示した図である。 発明を実施するための最良の形態 FIG. 7 is a diagram showing the pressure applied to the box in a daily change. BEST MODE FOR CARRYING OUT THE INVENTION
以下、 本発明の実施の形態を図面に示す実施例によ り説明す る。  Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.
図 1 は第 1実施例の圧力安全弁を示す断面図、 図 2は圧力安 全弁の使用状態を示す図、 図 3 (ィ)、 (口)、 図 4 (ィ)、 (口)、 図 5 (ィ )、 (口) は鉄含有球体と弁座との離反 · 密着状態を示 す断面図、 図 6及び図 7 はパッキンの弁座に対する取り付け構 造の例を示す断面図である。 図 8は弁室に形成した通気溝を示 す斜視図である。  Fig. 1 is a cross-sectional view showing the pressure relief valve of the first embodiment, Fig. 2 is a diagram showing the operating state of the pressure relief valve, Fig. 3 (a), (port), Fig. 4 (a), (port), Fig. 5 (a) and (mouth) are cross-sectional views showing the separation and close contact between the iron-containing sphere and the valve seat, and FIGS. 6 and 7 are cross-sectional views showing an example of the mounting structure of the packing to the valve seat. FIG. 8 is a perspective view showing a ventilation groove formed in the valve chamber.
本発明の圧力安全弁 V 1は、 図 2 に示すよう に、 水蒸気移動 制御装置 S を備えた箱体 Kや、 図 1 2 に示すよう に、 水蒸気移 動制御装置 Sの設定に使用する気密性検査装置 T等を被使用装 置とするもので、 この第 1実施例の圧力安全弁 V I は、 水蒸気 移動制御装置 Sを備えた箱体 Kに取り付けるよう にした例であ る。  The pressure relief valve V1 of the present invention is, as shown in FIG. 2, a box K provided with a water vapor transfer control device S, and as shown in FIG. 12, an airtightness used for setting the water vapor transfer control device S. In this example, the inspection device T is used as a device to be used, and the pressure relief valve VI of the first embodiment is an example in which the pressure relief valve VI is attached to a box K provided with a water vapor movement control device S.
なお、 水蒸気移動制御装置 Sの構成は、 前記した図 1 4の構 成と同様であるため省略する。  The configuration of the water vapor transfer control device S is the same as the configuration of FIG.
図 1 において、 4はシ リ ンダで、 通気側シ リ ンダ 4 1 と、 排 気側シ リ ンダ 4 2 を備え、 前記通気側シ リ ンダ 4 1 のネジ部 4 1 aを排気側シ リ ンダ 4 2のネジ穴 4 2 aに螺合させる こ とで 一体に連結されている。  In FIG. 1, reference numeral 4 denotes a cylinder, which includes a ventilation side cylinder 41 and an exhaust side cylinder 42. The screw section 41a of the ventilation side cylinder 41 is connected to an exhaust side cylinder. Screwed into the screw hole 42 a of the cylinder 42 to be integrally connected.
この通気側シリ ンダ 4 1 と、 排気側シ リ ンダ 4 2 を、 透明合 成樹脂 (アク リル、 ポリ 力一ボネー ト等) によ り形成すれば、 内部の状態が見え、 水滴 (結露) の付着や鯖びや汚れ等、 球体 の状態を確認するこ とができる。 その他、 防力 ビ材を含有する 7 合成樹脂ゃ耐紫外線性の合成樹脂を用いる ことができる し、 シ リ ンダ 4 に日除けを設けた り、 耐熱材で覆った り して保護して もよい。 If the ventilation side cylinder 41 and the exhaust side cylinder 42 are made of a transparent synthetic resin (acryl, polycarbonate, etc.), the internal state can be seen and water droplets (condensation) can be seen. You can check the state of the sphere, such as the adhesion of mackerel, mackerel and dirt. In addition, contains anti-biological 7 Synthetic resin—A UV-resistant synthetic resin can be used, or the cylinder 4 can be protected by providing a sunshade or covering it with a heat-resistant material.
前記通気側シ リ ンダ 4 1 は、 その上端部が被使用装置として の箱体 Kに接続部材 4 3 を介して取り付けられ、 その中心に組 み付け穴 4 4が形成され、 この組み付け穴 4 4 には、 内部が通 気路 4 5 に形成された通気管 4 6 が通気側シリ ンダ 4 1 の軸方 向に取り付けられている。  The upper end of the ventilation side cylinder 41 is attached to a box K as a device to be used via a connecting member 43, and an assembling hole 44 is formed at the center thereof. In 4, a ventilation pipe 46 having an inside formed in an air passage 45 is attached in the axial direction of the ventilation cylinder 41.
前記通気路 4 5の上端は箱体 K内に連通され、 他方、 下端の 通気口 4 7 は弁室 4 8内に開口され、 その通気口 4 7 を囲む状 態に前記通気管 4 6 の下端面に弁座 4 9 が形成されている。  The upper end of the ventilation passage 45 is communicated with the inside of the box K, while the ventilation hole 47 at the lower end is opened in the valve chamber 48, and the ventilation pipe 46 is surrounded by the ventilation hole 47. A valve seat 49 is formed on the lower end surface.
又、 前記通気側シ リ ンダ 4 1 の通気路 4 5の途中には、 空気 濾過手段と してのフ ィル夕 5 0が装着されてお り、 前記組み付 け穴 4 4 に螺合させたエン ド部材 5 1 を着脱するこ とによって フィル夕 5 0の交換ができる よう になつている。  In the middle of the ventilation path 45 of the ventilation side cylinder 41, a filter 50 as an air filtration means is mounted, and screwed into the mounting hole 44. By attaching and detaching the end member 51, the filler 50 can be replaced.
尚、 前記弁座 4 9 は、 図 3で示すよう に、 通気路 4 5 の通気 口 4 7の内縁に沿う よう に リ ング状パッキン 5 2が装着されて いる形態のもの、 図 4に示すよう に、 通気管 4 6の外縁に沿う よう に リ ング状パッキン 5 3 が装着されている形態のもの、 図 5 に示すように、 通気管 4 6 の下端面を凹面に形成しただけの ものがある。 この場合、 弁体と しての鉄含有球体 8 との密着を 確保しながら、 鉄含有球体 8 との付着防止を図る上で、 図 3で 示す形態が最も好ま しい。  As shown in FIG. 3, the valve seat 49 has a form in which a ring-shaped packing 52 is attached along the inner edge of the ventilation port 47 of the ventilation path 45, as shown in FIG. With the ring-shaped packing 53 attached along the outer edge of the ventilation pipe 46, as shown in Fig. 5, and with the lower end face of the ventilation pipe 46 simply formed as a concave surface. There is. In this case, the configuration shown in FIG. 3 is the most preferable in order to prevent adhesion to the iron-containing sphere 8 while ensuring close contact with the iron-containing sphere 8 as a valve.
なお、 前記図 3、 図 4、 図 5 において、 (ィ) は鉄含有球体が 弁座から離反した状態を示し、 (口)は鉄含有球体が弁座に密着 8 した状態を示している。 In FIGS. 3, 4, and 5, (a) shows a state in which the iron-containing sphere is separated from the valve seat, and (port) shows an iron-containing sphere in close contact with the valve seat. 8 is shown.
なお、 弁座 4 9 を形成する通気管 4 6 の材料については、 透 磁体を必須事項とする。 例えば、 テ フ ロ ン (登録商標) 材ゃス テン レス材、 銅、 真鍮、 セラ ミ ッ クなどが考え られる。 これら の材質の中でも、 真鍮は加工性も よ く、 耐触性も よいが、 低質 のステンレス素材では、 強度上、 好ま しいが、 一時磁性体 (一 時磁石) となる こ とがあ り、 一時磁石となる可能性がある材質 は、 通気管 4 6 には好ま し く ない。 また、 弁座 4 9 を形成する 通気管 4 6 には耐油性が要求され、 腐蝕しに く い物質を選択す る必要がある。  As for the material of the ventilation pipe 46 forming the valve seat 49, a permeable material is required. For example, Teflon (registered trademark) material, stainless steel material, copper, brass, ceramic, and the like can be considered. Among these materials, brass has good workability and good touch resistance, but low-quality stainless steel is preferable in terms of strength, but it may be a temporary magnetic material (temporary magnet). Materials that can become temporary magnets are not preferred for the ventilation tube 46. In addition, the ventilation pipe 46 forming the valve seat 49 is required to have oil resistance, and it is necessary to select a substance which is not easily corroded.
又、 鉄含有球体 8の動作圧力の誤差を軽減し、 微圧動作を確 実にするためには、 弁座 4 9 への鉄含有球体 8 の密着と、 パッ キン との離反が容易かつ確実に行なわれる よう に、 パッキンの 材質を選択する必要がある。  In addition, in order to reduce the error of the operating pressure of the iron-containing sphere 8 and to ensure the fine pressure operation, it is necessary to easily and reliably adhere the iron-containing sphere 8 to the valve seat 49 and separate it from the packing. It is necessary to select the material of the packing to be performed.
前記リ ング状のパッキン 5 2 の材質と しては、 耐候性を考慮 し、 高温に耐え、 耐油性に富む物質を選択する必要がある。 ま た、 空気中には、 排ガスなどの油成分が浮遊しているこ とがあ り、 このよう な汚損された空気も弁座 4 9 を汚すこ とがある。 そこで、 ノ ヅキン 5 2 に用い られる材質と して、 二 ト リルゴ ム ( N B R;)、 ア ク リ ルゴム ( A C M )、 シ リ コーン ゴム ( V M Q )、 フ ッ素ゴム( F K M )などが用いられるが、 このなかでも、 フ ッ素ゴム ( F K M ) が最も適している。  As the material of the ring-shaped packing 52, it is necessary to select a material that can withstand high temperatures and has high oil resistance in consideration of weather resistance. In addition, oil components such as exhaust gas may float in the air, and such contaminated air may contaminate the valve seat 49. Therefore, as the materials used for the nozzle 52, nitrile rubber (NBR;), acryl rubber (ACM), silicone rubber (VMQ), fluorine rubber (FKM), and the like are used. However, of these, fluoro rubber (FKM) is the most suitable.
又、 図 6及び図 7 はパ ッキンの弁座に対する取り付け構造の 例を示す断面図である。  FIGS. 6 and 7 are cross-sectional views showing examples of the mounting structure of the packing to the valve seat.
図 6 では、 ノ ッ キン と して断面楕円形のパッ キン 5 4 が用い られ、 図 7では、 ノ ッキンと して中程に切欠部が形成された リ ップノ、。 ヅキン 5 5 が用いられている。 In Fig. 6, packing 54 with an elliptical cross section is used as the knocking. In Fig. 7, the notch has a notch formed in the middle as a knock.ヅ Kin 5 5 is used.
鉄含有球体 8が弁座 4 9 から離反する場合、 鉄含有球体 8が パ ヅキン 5 4 , 5 5 に引っ付いて しまう こ とがある。 そこで、 図に示すよう に、 ノ ヅキン 5 4 , 5 5 の嵌合溝 5 6 にアンダー カ ッ ト部 5 7 を形成して、 鉄含有球体 8 とパッキン 5 4 , 5 5 との引っ付きを防止するよう にしている。  When the iron-containing sphere 8 separates from the valve seat 49, the iron-containing sphere 8 may be stuck to the packings 54, 55. Therefore, as shown in the figure, an undercut portion 57 is formed in the fitting groove 56 of the nozzles 54, 55 to prevent the iron-containing sphere 8 from being caught by the packings 54, 55. I am trying to do it.
又、 ノ ッキン 5 4 , 5 5の外径は嵌合溝 5 6 の内径よ り も大 径に形成され、 これによ り、 ノ ヅキン 5 4 , 5 5 と嵌合溝と 5 6 を接着剤等で接着させるこ とな く密着させてシール性を確保 するよう にしている。  In addition, the outer diameter of the knockers 54, 55 is formed to be larger than the inner diameter of the fitting groove 56, thereby bonding the knockers 54, 55, the fitting groove and 56. They are tightly adhered to each other without being adhered with an agent or the like to ensure sealing.
図 1 で示すよう に、 前記排気側シ リ ンダ 4 2 の中心には、 前 記通気路 4 5 と一直線になるよう に排気路 6 0 が形成され、 こ の排気路 6 0の下端は大気に開放され、 他方、 上端の排気口 6 1 は前記弁室 4 8 内に開口されている。  As shown in FIG. 1, an exhaust path 60 is formed at the center of the exhaust-side cylinder 42 so as to be in line with the above-described ventilation path 45, and the lower end of the exhaust path 60 is air-tight. On the other hand, the exhaust port 61 at the upper end is opened into the valve chamber 48.
尚、 前記排気側シ リ ンダ 4 2の上端面には、 弁室 4 8の内面 を形成する半円形凹部 6 2 が排気路 6 0の排気口 6 1 を囲む状 態に形成され、 こ の半円形凹部 6 2 の上端縁がテーパ面 6 3 に 面取り されている。  A semicircular recess 62 forming the inner surface of the valve chamber 48 is formed on the upper end surface of the exhaust-side cylinder 42 so as to surround the exhaust port 61 of the exhaust path 60. The upper edge of the semicircular recess 62 is chamfered to the tapered surface 63.
又、 前記排気側シ リ ンダ 4 2の排気路 6 0の途中には、 空気 濾過手段と してのフィル夕 5 0 aが装着されており、 排気側シ リ ンダ 4 2 の下端に螺合させたェン ド部材 6 5 を着脱するこ と によってフィル夕 5 0 aの交換ができるよう になつている。 前記弁室 4 8 内には、弁体としての鉄含有球体 8が収容され、 この鉄含有球体 8は、 常時は弁座 4 9 に密着した状態に保持さ れて通気路 4 5 と排気路 6 0 との連通を遮断させ、 一方、 被使 用装置 (箱体 K ) に異常圧力が生じる と、 弁座 4 9 から離反し て通気路 4 5 と排気路 6 0 を連通させるように形成されている, 前記鉄含有球体 8 の表面は、 防蝕加工(例えば、 テフ ロ ン (登 録商標) 加工) されてお り、 これによ り、 鉄含有球体 8 の鯖び 付きや表面が汚損するのを防止できる し、 鉄含有球体 8の移動 に伴う磁石粉末の生成を予防するこ とができる。 In the middle of the exhaust path 60 of the exhaust-side cylinder 42, a filter 50a as an air filtering means is mounted, and is screwed to a lower end of the exhaust-side cylinder 42. By attaching and detaching the end member 65, the filler 50a can be replaced. The valve chamber 48 accommodates an iron-containing sphere 8 as a valve, and the iron-containing sphere 8 is always kept in close contact with the valve seat 49. And the communication between the ventilation path 45 and the exhaust path 60 is interrupted. On the other hand, if abnormal pressure is generated in the device to be used (box K), it is separated from the valve seat 49 and the ventilation path 45 and the exhaust The surface of the iron-containing sphere 8, which is formed so as to communicate with the road 60, is subjected to corrosion-resistant processing (for example, Teflon (registered trademark) processing), whereby the iron-containing sphere is formed. In addition, it is possible to prevent the surface of the iron-containing sphere 8 from becoming dirty and to prevent the surface of the iron-containing sphere 8 from being magnetized.
この場合、 鉄含有球体 8 と して、 低質ステンレス鋼球による ベアリ ング球などの表面不動能化防蝕層を有する材質が好ま し い。  In this case, as the iron-containing sphere 8, a material having a surface immobilization corrosion-resistant layer such as a bearing ball made of low-quality stainless steel ball is preferable.
なお、鉄含有球体 8は、磁性体にも変化する一時磁石であ り、 軟質 (ソ フ ト) 磁性材料である。  The iron-containing sphere 8 is a temporary magnet that changes into a magnetic material, and is a soft (soft) magnetic material.
尚、 前記弁座 4 9 から離反した鉄含有球体 8 が排気口 6 1 を 閉塞するのを防止するために、 図 8 に示すよう に、 前記弁室 4 8の内面である半円形凹部 6 2 からテ一パ面 6 3 にかけての部 分に排気路 6 0 に連通する通気溝 6 4が、 排気側シ リ ンダ 4 2 に直接加工して形成されている。  As shown in FIG. 8, in order to prevent the iron-containing sphere 8 separated from the valve seat 49 from closing the exhaust port 61, as shown in FIG. A vent groove 64 communicating with the exhaust path 60 is formed in the exhaust cylinder 42 directly at a portion extending from the taper surface 63 to the taper surface 63.
そして、 前記鉄含有球体 8 を前記弁座 4 9 に密着した状態に 保持させる手段と して磁石 7 (永久磁石) が用いられている。  A magnet 7 (permanent magnet) is used as means for holding the iron-containing sphere 8 in close contact with the valve seat 49.
この磁石 7は、 前記鉄含有球体 8 を弁座 4 9 に吸着して密着 保持させるための磁力が、 前記箱体 Kに取り付けた水蒸気移動 制御装置 Sの動作上要求される動作しきい値に調整されている 又、 前記磁石 7は、 前記鉄含有球体 8 が弁座 4 9 に密着した 状態において、 鉄含有球体 8及び弁座 4 9 から離隔をおいて配 置されている。 2 この場合、 通気側シ リ ンダ 4 1 の内部に形成したシ リ ンダ穴 7 1 に、 2個の リ ング状の磁石 7 , 7 を重ねた状態で、 前記通 気管 4 6 との間に隙を保持して嵌め込むこ とによ り、磁石 7 と、 鉄含有球体 8及び弁座 4 9 との間に離隔を設ける よ う に してい る。 The magnet 7 has a magnetic force for attracting the iron-containing sphere 8 to the valve seat 49 and holding the iron-containing sphere 8 in close contact with the valve seat 49, at an operation threshold value required for the operation of the water vapor movement control device S attached to the box K. The magnet 7 is arranged at a distance from the iron-containing sphere 8 and the valve seat 49 in a state where the iron-containing sphere 8 is in close contact with the valve seat 49. 2 In this case, two ring-shaped magnets 7, 7 are superimposed on a cylinder hole 71 formed inside the ventilation side cylinder 41, and a gap is formed between the cylinder and the ventilation pipe 46. The gap is retained and fitted, so that a gap is provided between the magnet 7 and the iron-containing sphere 8 and the valve seat 49.
又、 前記磁石 7 には、 この磁石 7 をシ リ ンダ 4の軸方向に移 動させて、 磁石 7 と、 鉄含有球体 8及び弁座 4 9 との離隔距離 を調整するための離隔調整手段が設けられている。  Further, the magnet 7 is moved in the axial direction of the cylinder 4 so as to adjust the separation distance between the magnet 7, the iron-containing sphere 8 and the valve seat 49. Is provided.
この離隔調整手段と しては、 シ リ ンダ穴 7 1 の奥部にスプリ ング 7 2 を設けて、 このスプリ ング 7 2 によ り前記磁石 7 を常 時は、 排気シ リ ンダ 4 2 に対向する方向 (図面では下向き) に 介在部材 7 3 を介して付勢させる よう に している。  As this separation adjusting means, a spring 72 is provided at the back of the cylinder hole 71, and the magnet 7 is normally attached to the exhaust cylinder 42 by the spring 72. It is urged in the opposite direction (downward in the drawing) via the intervening member 73.
そ して、 前記排気側シ リ ンダ 4 2 の通気側シ リ ンダ 4 1 に対 するネジ部 4 2 a とネジ穴 4 1 a との螺合を利用 して離隔距離 を調整する もので、 この場合、 排気側シ リ ンダ 4 2 を後退方向 (図面では下向き) に緩めてい く と、 前記スプリ ング 7 2 によ り付勢されて磁石 7 が下向きに移動し、 磁石 7 が鉄含有球体 8 及び弁座 4 9 に近づき、 鉄含有球体 8 に対して磁力を強 く作用 させる こ とがで きる。  Then, the separation distance is adjusted by using a screw engagement between the screw portion 42a and the screw hole 41a of the exhaust side cylinder 42 with respect to the ventilation side cylinder 41. In this case, when the exhaust-side cylinder 42 is loosened in the retreating direction (downward in the drawing), the magnet 7 is urged by the spring 72 to move downward, and the magnet 7 is moved to the iron-containing sphere. 8 and the valve seat 49 are approached, and a strong magnetic force can be applied to the iron-containing sphere 8.
他方、 排気側シ リ ンダ 4 2 を前進方向 (図面では上向き) に 締めてい く と、 前記スプリ ング 7 2 によ り杭して磁石 7 が上向 きに移動し、 磁石 7 が鉄含有球体 8及び弁座 4 9 から離れて、 鉄含有球体 8 に対して磁力を弱 く作用させる こ とができる。  On the other hand, when the exhaust-side cylinder 42 is tightened in the forward direction (upward in the drawing), the magnet 7 moves upward by being piled by the spring 72, and the magnet 7 is moved to the iron-containing sphere. The magnetic force can be weakly applied to the iron-containing sphere 8 apart from the valve seat 8 and the valve seat 49.
このよう に、 離隔距離の調整、 すなわち、 限度圧力の調整は、 排気側シ リ ンダ 4 2 を締めた り、 緩めた り する こ とで行なわれ るため、 その調整度合いを目視によって確認できる よう に、 排 気側シリ ンダ 4 2及び通気側シリ ンダ 4 1 に、 離隔距離を限度 圧力に換算した目盛 7 4, 7 5 を表示するよう にしている。 こ の場合の目盛 7 4 , 7 5 としては、 距離測定具としてのノギス で用いられているような副尺目盛を用いるのが、 正確な調整を 行うためにも好ま しい。 このほか、 目盛 7 4 , 7 5 の表示と し て、 取り付ける箱体 Kの容積や使用する地域の平均温度帯域を 表示して、 簡便な調整を施すよう にしても よい。 As described above, the adjustment of the separation distance, that is, the adjustment of the limit pressure is performed by tightening or loosening the exhaust-side cylinder 42. For this reason, scales 74, 75 that convert the separation distance to the limit pressure are displayed on the exhaust-side cylinder 42 and the vent-side cylinder 41 so that the degree of adjustment can be visually checked. I have. In this case, as the scales 74 and 75, it is preferable to use a vernier scale such as that used for a caliper as a distance measuring device for accurate adjustment. In addition, the scales 74 and 75 may indicate the volume of the box K to be attached or the average temperature band in the region where the scale is used, so that simple adjustments may be made.
本発明の弁機構では、 鉄含有球体 8が弁座 4 9 に接触する磁 力強度に依存するほか、 後述する図 1 1 のよう に、 鉄含有球体 8の自重によ り密着力が大き く影響を受ける。  In the valve mechanism of the present invention, the iron-containing sphere 8 depends on the magnetic force in contact with the valve seat 49, and the adhesion force is increased by the weight of the iron-containing sphere 8, as shown in FIG. to be influenced.
そこで、 鉄含有球体 8 と磁石 7 との距離を大き く 変化させる 必要があ り、 このため、 前記したよう に、 弁室 4 8 の内面に半 円形凹部 6 2 を形成しておく と、 鉄含有球体 8 の移動範囲が広 く な り、 その分、 離隔調整手段による離隔距離の調整幅を大き く取るこ とができる。  Therefore, it is necessary to greatly change the distance between the iron-containing sphere 8 and the magnet 7. For this reason, as described above, if the semicircular recess 62 is formed on the inner surface of the valve chamber 48, the iron The moving range of the containing sphere 8 is increased, and accordingly, the width of adjustment of the separation distance by the separation adjusting means can be made large.
次に、 図 9 は第 2実施例の圧力安全弁を示す断面図である。 この圧力安全弁 V 2では、 前記第 1実施例のよう に、 通気側 シ リ ンダ 4 1 の内部に形成したシ リ ンダ穴に磁石を嵌め込むと 同時に、排気側シ リ ンダ 4 2の内部にも磁石 7 6 を取り付けて、 この両磁石 7 , 7 6 を同一の磁極 (図面では、 S極同士) が対 向するよう に配置している。  Next, FIG. 9 is a sectional view showing a pressure relief valve according to a second embodiment. In the pressure relief valve V2, as in the first embodiment, the magnet is fitted into the cylinder hole formed inside the ventilation side cylinder 41, and at the same time, the magnet is fitted inside the exhaust side cylinder 42. Also, a magnet 76 is attached, and the magnets 7 and 76 are arranged so that the same magnetic poles (S poles in the drawing) face each other.
このよう に、 同一の磁極を対向させる状態で、 鉄含有球体 8 の上下に磁石 7 , 7 6 を配置させる と、 図で示すように、 磁力 線に歪みが生じて鉄含有球体 8 を抱き込むよう になるため、 鉄 含有球体 8 に対して磁力を確実に作用させて、 確実に作動させ るこ とができる。 When the magnets 7, 76 are arranged above and below the iron-containing sphere 8 with the same magnetic poles facing each other, as shown in the figure, the lines of magnetic force are distorted and the iron-containing sphere 8 is embraced. So that the iron The magnetic force can be reliably applied to the containing sphere 8 to reliably operate it.
尚、 その他の構成は、 前記第 1実施例と同様である。  The other configuration is the same as that of the first embodiment.
次に、 図 1 0は圧力安全弁 V 1 を水蒸気移動制御装置 S に組 み付けた例を示す断面図である。  Next, FIG. 10 is a cross-sectional view showing an example in which the pressure relief valve V 1 is assembled to the steam movement control device S.
この場合、 水蒸気移動制御装置 S には、 その外周に保温ジャ ケヅ ト 3 4を介してァウタケース 3 5が設けられている。  In this case, the water vapor transfer control device S is provided with an outer case 35 on the outer periphery thereof via a heat retaining jacket 34.
そして、 前記保温ジャケッ ト 3 4 内を貫通して、 延長管 3 6 が配管され、 この延長管 3 6 の上端を箱体 K内に開口させる と 共に、 延長管 3 6の下端を圧力安全弁 V I の通気路 4 5 の上端 に連通させた構造になっている。  An extension pipe 36 is piped through the heat insulation jacket 34, and the upper end of the extension pipe 36 is opened into the box K, and the lower end of the extension pipe 36 is connected to the pressure relief valve VI. It has a structure that communicates with the upper end of the ventilation path 45.
従って、 圧力安全弁 V I は、 水蒸気移動制御装置 S と一体に なり、 その取り扱いが便利になる。  Therefore, the pressure relief valve VI is integrated with the steam movement control device S, and its handling is convenient.
次に、 図 1 1 は第 3実施例の圧力安全弁を示す断面図、 図 1 2はこの圧力安全弁の使用状態を示す図である。  Next, FIG. 11 is a sectional view showing a pressure relief valve according to a third embodiment, and FIG. 12 is a view showing a use state of the pressure relief valve.
この第 3実施例の圧力安全弁 V 3 は、 水蒸気移動制御装置 S の設定に使用する気密性検査装置 T に取り付けるよう にした例 である。  The pressure relief valve V 3 of the third embodiment is an example in which the pressure relief valve V 3 is attached to an airtightness inspection device T used for setting the steam movement control device S.
前記気密性検査装置 Tは、微弱な圧力をかけるこ とによって、 水蒸気移動制御装置 Sの膜体 Mや箱体 Kにス ト レスを加えるこ とな く、しかも高感度で精度よ く箱体 Kの気密状態を検査して、 箱体 Kの破損や膜体 Mの破れ等を原因と した気密の漏洩を発見 する ことができるよう にしたものである。  The airtightness inspection device T does not apply stress to the film body M or the box body K of the water vapor transfer control device S by applying a slight pressure, and is highly sensitive and accurate. By inspecting the airtightness of K, it is possible to detect leaks in airtightness due to breakage of the box K or tearing of the membrane M.
その構成は、 内部に圧力緩衝空間 8 5 が形成された圧力取込 ケ一シング 8 6 と、先端が圧力取込ケーシング 8 6 に接続され、 基端が気体注入装置 8 7 に接続された上流側送気管 8 8 と、 先 端が前記箱体 K内に接続され、 基端が前記圧力取込ケーシング 8 6 に接続された下流側送気管 8 9 と、 前記上流側送気管 8 8 から分岐した往側圧力取込管 9 0 と、 前記圧力取込ケーシング 8 6から分岐した戻側圧力取込管 9 1 との間に接続された差圧 計 9 2 とを備えている。 The structure is such that a pressure intake casing 86 having a pressure buffer space 85 formed therein and a pressure intake casing 86 at the end are connected to each other. An upstream air supply pipe 88 whose base end is connected to the gas injection device 87, and a downstream air supply pipe whose base end is connected to the inside of the box K and whose base end is connected to the pressure intake casing 86. 8 9, a difference connected between an upstream pressure intake pipe 90 branched from the upstream air supply pipe 88 and a return pressure intake pipe 91 branched from the pressure intake casing 86. A pressure gauge 92 is provided.
前記上流側送気管 8 8 と下流側送気管 8 9 とは直線上に配置 した状態で圧力取込ケ一シング 8 6 に接続される と共に、 上流 側送気管 8 8の先端管部 8 8 aは、 その先端口が下流側送気管 The upstream air-supply pipe 88 and the downstream air-supply pipe 89 are connected to a pressure intake casing 86 in a state of being arranged in a straight line, and a distal end pipe section 8 8a of the upstream air-supply pipe 88 is provided. Is the downstream air supply pipe
8 9 の基端部内部に開口する よう に、 圧力緩衝空間 8 5 内を通 り過ぎて下流側送気管 8 9の基端部に挿入され、 前記戻側圧力 取込管 9 1 は、 前記上流側送気管 8 8 と下流側送気管 8 9 とが 配置された直線に対し角度 (直角) を持つよう に分岐して圧力 取込ケーシング 8 6 に接続され、 前記気体注入装置 8 7 から送 気される往側気体を上流側送気管 8 8から下流側送気管 8 9 を 経て箱体 Kの内部に送気する と共に、 この箱体 Kの内部から反 射した戻側気体を下流側送気管 8 9 から圧力緩衝空間 8 5 を経 て前記戻側圧力取込管 9 1 から差圧計 9 2 に取り込み、 この戻 側圧力取込管 9 1 から差圧計 9 2 に取り込んだ戻側気体の圧力 と、 前記往側圧力取込管 9 0 から差圧計 9 2 に取り込んだ往側 気体の圧力との差圧を計測するよう に構成されている。 89, is inserted into the base end of the downstream air supply pipe 89 after passing through the pressure buffer space 85 so as to open inside the base end of the pipe 89, and the return pressure intake pipe 91 is The upstream air supply pipe 88 and the downstream air supply pipe 89 are branched so as to have an angle (perpendicular) to the straight line where they are arranged, connected to the pressure intake casing 86, and sent from the gas injection device 87. The incoming gas is sent from the upstream air supply pipe 88 to the downstream air supply pipe 89 to the inside of the box K, and the return gas reflected from the inside of the box K is sent downstream. From the trachea 89 through the pressure buffer space 85, the return pressure intake pipe 91 takes in the differential pressure gauge 92 from the return pressure intake pipe 91, and the return gas taken in from the return pressure intake pipe 91 to the differential pressure gauge 92 comes out. It is configured to measure a differential pressure between the pressure and the pressure of the forward gas taken into the differential pressure gauge 92 from the forward pressure intake pipe 90.
この気密性検査装置 Tでは、 戻側圧力取込管 9 1 から差圧計 In this airtightness inspection device T, the differential pressure gauge
9 2 に取り込んだ戻側気体の圧力と、 前記往側圧力取込管 9 0 から差圧計 9 2 に取り込んだ往側気体の圧力との差圧を計測し た結果、 往側気体の圧力が戻側気体の圧力よ り も大きいと、 差 圧計 9 2 が差圧を表示し、 箱体 K又は膜体 Mに破損が有って気 密が漏洩している と認定し、 又、 往側気体の圧力と戻側気体の 圧力とがほぼ同一の場合には、 差圧計 9 2 が差圧を表示しない こ とから気密が保持されていると認定するこ とになる。 As a result of measuring the differential pressure between the pressure of the return gas taken in to 92 and the pressure of the outgoing gas taken from the outgoing pressure intake pipe 90 to the differential pressure gauge 92, the pressure of the outgoing gas was If the pressure is greater than the pressure of the return gas, the difference The pressure gauge 92 indicates the differential pressure, it is determined that the box K or the membrane M is damaged and the airtightness is leaking, and the pressure of the outgoing gas and the pressure of the returning gas are almost equal. In the same case, the differential pressure gauge 92 does not indicate the differential pressure, so it is determined that the airtightness is maintained.
又、 この気密性検査装置 Tでは、 前記下流側送気管 8 9の先 端に、 箱体 Kの内部から流下した水を受け止めるために水受け 器 9 3が設けられている。  Further, in the airtightness inspection device T, a water receiver 93 is provided at the end of the downstream air supply pipe 89 to receive water flowing down from the inside of the box K.
従って、 箱体 Kの内部に水が溜まっているような場合での検 査に際し、 箱体 Kから流下する水を直ちに受け止めて、 装置 T の内部に水が侵入するのを防止して、 適切な検査を行なうこと ができる。  Therefore, when conducting an inspection in the case where water accumulates inside the box K, immediately catch the water flowing down from the box K, prevent water from entering the inside of the device T, and Inspection can be performed.
そして、 前記上流側送気管 8 8 には、 往側圧力取込管 9 0 よ り も上流側に圧力安全弁 V 3 が設けられている。  The upstream air supply pipe 88 is provided with a pressure safety valve V 3 on the upstream side of the upstream pressure intake pipe 90.
この圧力安全弁 V 3は、 前記第 1実施例で示した圧力安全弁 V 1 を天地反転させた状態で検査用ケーシング 9 4 に取 り付け られている。  The pressure relief valve V3 is attached to the inspection casing 94 with the pressure relief valve V1 shown in the first embodiment turned upside down.
この場合、 通気側シリ ンダ 4 1 の下端に、 通気路 4 5 に連通 する接続金具 7 7が取り付けられ、 この接続金具 7 7 と上流側 送気管 8 8 とが、 フ レキシブルホース 7 8 によって連通されて いる。  In this case, a connection fitting 77 connected to the air passage 45 is attached to the lower end of the ventilation side cylinder 41, and the connection fitting 77 and the upstream air supply pipe 88 are connected by a flexible hose 78. It has been.
この圧力安全弁 V 3では、 鉄含有球体 8 の自重が弁座 4 9 に 加わるため、 この鉄含有球体 8の重量を考慮に入れて磁石 7の 吸着力を調整する必要がある。  In the pressure relief valve V3, the weight of the iron-containing sphere 8 is added to the valve seat 49, so that it is necessary to adjust the attraction force of the magnet 7 in consideration of the weight of the iron-containing sphere 8.
また、 この圧力安全弁 V 3 では、 磁石 7 は、 前記鉄含有球体 8 が弁座 4 9 に密着した状態において、 鉄含有球体 8及び弁座 4 9から離隔をおいて配置されているが、 この場合、 通気側シ リ ンダ 4 1の内部に形成したシ リ ンダ穴 7 1 に、 1個の リ ング 状の磁石 7を、 前記通気管 4 6 との管に隙を保持して嵌め込む と共に、 この磁石 7 と介在部材 7 3の間にスぺ一サ 7 9 を取り 付けるこ とで、 磁石 7 と、 鉄含有球体 8 との間隔を調整できる よう にしている。 In this pressure relief valve V 3, the magnet 7 moves the iron-containing sphere 8 and the valve seat in a state where the iron-containing sphere 8 is in close contact with the valve seat 49. In this case, one ring-shaped magnet 7 is inserted into a cylinder hole 7 1 formed inside the ventilation side cylinder 41, and The gap between the magnet 7 and the iron-containing sphere 8 is provided by attaching a gap 79 between the magnet 7 and the intervening member 73 while holding the gap in the tube with the gap 6. Can be adjusted.
すなわち、 スぺーサ 7 9の高さを変更させる ことによ り、 磁 石 7の取り付け位置 (鉄含有球体 8 との間隔) を調整でき、 磁 石 7による鉄含有球体 8に対する吸着力を調整できる。  That is, by changing the height of the spacer 79, the mounting position of the magnet 7 (the distance from the iron-containing sphere 8) can be adjusted, and the attraction force of the magnet 7 to the iron-containing sphere 8 can be adjusted. it can.
なお、 その他の構成及び作用は、 前記第 1実施例の圧力安全 弁 V 1 と同様である。  The other configurations and operations are the same as those of the pressure relief valve V1 of the first embodiment.
尚、 本発明の実施例において、 磁石 7の磁力は、 鉄含有球体 8の重量を、 約 5 gと して、 約 3 0. 8 g f / c m2程度の永 久磁石を用いた事例と して、 図 1、 図 9、 図 1 1を示した。 こ の他、 永久磁石の磁力を強化した り、 逆に減弱したものを用い るこ とができるる。 In the embodiment of the present invention, the magnetic force of the magnet 7 is an example using a permanent magnet of about 30.8 gf / cm 2 with the weight of the iron-containing sphere 8 being about 5 g. Figures 1, 9, and 11 are shown. In addition, it is possible to use a permanent magnet whose magnetic force is strengthened or reduced.
又、 磁石 (磁性材料) の材質と しては、 A l n i c o R - C o ; B aフ ェライ ト による硬質磁性材料や、 F e— S i ; M n— Z nフ ェライ トによる軟質磁性材料を用いるこ とができる が、 硬質磁性材料が好ま しい。  The magnet (magnetic material) is made of a hard magnetic material made of Alnico R-Co; Ba ferrite, or a soft magnetic material made of Fe—Si; Mn—Zn ferrite. Although a hard magnetic material can be used, a hard magnetic material is preferred.
なお、 本発明において、 水蒸気移動制御装置や気密性検査装 置等、箱体や圧力安全弁の各構成部材に防カビ樹脂を用いた り、 その表面に防ガビ剤や撥水剤を使用するこ とができる し、 適宜 の部位 (特に、 圧力安全弁の通気路) などに、 温度指示塗料を 塗布して、 異常温度になったら表示するよう にしてもよい。 次に、 図 1 3は本発明の圧力安全弁の限度圧力の試験結果を グラフで示した図である。 In the present invention, a mold-proof resin is used for each component of the box and the pressure relief valve, such as a water vapor transfer control device and an airtightness inspection device, and a grease-proof agent or a water-repellent agent is used for the surface. Alternatively, a temperature indication paint may be applied to an appropriate part (particularly, a ventilation path of a pressure relief valve) and the like, and an abnormal temperature may be displayed. Next, FIG. 13 is a graph showing the test results of the limit pressure of the pressure relief valve of the present invention.
線 C 1 : 2個の磁石 7 , 7 を鉄含有球体 8の下方に配置した 場合の限度圧力  Line C 1: Limit pressure when two magnets 7, 7 are placed below iron-containing sphere 8
線 C 2 : 1個の磁石 7 を鉄含有球体 8の上方にスぺ一サ 7 9 を介して配置した場合の限度圧力  Line C 2: Limiting pressure when one magnet 7 is arranged above the iron-containing sphere 8 via a spacer 79
線 C 3 : 1個の磁石 7を鉄含有球体 8の下方にスぺ一サ 7 9 を介して配置した場合 (第 3実施例) の限度圧力  Line C 3: Limit pressure when one magnet 7 is arranged below iron-containing sphere 8 via spacer 79 (third embodiment)
線 C 4 : 2個の磁石 7 , 7 を鉄含有球体 8の上方に配置した 場合 (第 1実施例) の限度圧力  Line C 4: Limit pressure when two magnets 7, 7 are arranged above iron-containing sphere 8 (first embodiment)
線 C 5 : 1個の磁石 7を鉄含有球体 8の上方及び下方に配置 した時の限度圧力  Line C 5: Limit pressure when one magnet 7 is placed above and below iron-containing sphere 8
この図では、 磁石 7 が鉄含有球体 8 に近づいている時には、 限度圧力が高く、 磁石 7が鉄含有球体 8から離れていく と、 限 度圧力が低く なつてい く こ とが判る。  In this figure, it can be seen that the limit pressure is high when the magnet 7 is approaching the iron-containing sphere 8, and the limit pressure decreases as the magnet 7 moves away from the iron-containing sphere 8.
従って、 離隔調整手段によって、 磁石 7 と、 鉄含有球体 8及 び弁座 4 9 との離隔距離を調整した り、 又、 スぺ一サ 7 9 によ つて、 磁石 7の取り付け位置 (鉄含有球体 8 との間隔) を調整 することによ り、 磁石 7による鉄含有球体 8への吸着力を調整 できるこ とが、 この図 1 3 によって理解できる。  Therefore, the distance between the magnet 7 and the iron-containing sphere 8 and the valve seat 49 can be adjusted by the distance adjusting means, and the mounting position of the magnet 7 (iron-containing It can be understood from FIG. 13 that the attraction force of the magnet 7 to the iron-containing sphere 8 can be adjusted by adjusting the distance between the sphere 8 and the sphere 8.
なお、 磁石 7 による鉄含有球体 8への吸着力の調整を容易に するためには、 磁石 7 が鉄含有球体 8 から離れていく に したが つて、 限度圧力が次第に低く なつてい く のが好ま しく、 この点 では、 図 1 3 において、 線 C 3、 線 C 4、 線 C 5 の形態が好ま しいといえる。 このよう に、 本発明の圧力安全弁は、 水蒸気移動制御装置、 加湿装置、 除湿装置、 およびこれらの設定時に使用する気密性 検査装置などの、 内部の局部的な異常圧力が発生した場合に、 この異常圧力を逃がして、 膜の破損を防止するこ とができる。 又、磁石 7 による鉄含有球体 8への吸着力を調整できるため、 圧力安全弁の限度圧力を調整できる もので、 従って、 例えば、 水蒸気移動制御装置としては、 所定の規格による 1種類の水蒸 気移動制御装置を作り、 この際、 圧力安全弁の限度圧力を調整 すれば、 1種類の水蒸気移動制御装置をサイズや設置環境ゃ材 質が異なる条件の箱体に適用するこ とができる。 In order to facilitate the adjustment of the attraction force of the magnet 7 to the iron-containing sphere 8, it is preferable that the limit pressure is gradually reduced as the magnet 7 moves away from the iron-containing sphere 8. In this respect, it can be said that in FIG. 13, the shapes of the line C 3, the line C 4, and the line C 5 are preferable. As described above, the pressure relief valve according to the present invention can be used when the internal local abnormal pressure of the steam transfer control device, the humidifying device, the dehumidifying device, and the airtightness inspection device used at the time of setting them is generated. Abnormal pressure can be released and membrane breakage can be prevented. Also, since the adsorbing force of the magnet 7 on the iron-containing sphere 8 can be adjusted, the limit pressure of the pressure relief valve can be adjusted. Therefore, for example, as a water vapor transfer control device, one type of water vapor according to a predetermined standard is used. By making a movement control device and adjusting the limit pressure of the pressure relief valve at this time, one type of water vapor movement control device can be applied to a box having different sizes, installation environments, and materials.
この場合の水蒸気移動制御装置と して、図 1 7で示すよう に、 膜体の安全使用範囲 Lよ り も更に内側の範囲 L 1 内で圧力安全 弁が作動するよう にしても よいし、 又、 破壊しう る与圧範囲 L 2 内であれば、 安全使用範囲 Lを越える範囲で圧力安全弁が作 動するよう にしても よい。 産業上の利用可能性  As a water vapor transfer control device in this case, as shown in Fig. 17, the pressure safety valve may be operated within a range L1 further inside the safe use range L of the membrane, Also, the pressure relief valve may be operated in a range exceeding the safe use range L as long as the pressure is within the decompressible pressure range L 2. Industrial applicability
従って、 本発明の圧力安全弁 (請求項 1 ) では、 水蒸気や空 気の移動の境界部の破壊や急速な劣化による水蒸気移動特性の 変化に伴う水蒸気移動制御装置、 加湿装置、 除湿装置、 および これらの設定時に使用する気密性検査装置などの、 内部の局部 的な異常圧力が発生した場合に、 この異常圧力を逃がして、 膜 の破損を防止する こ とができる。  Therefore, in the pressure relief valve of the present invention (claim 1), a steam transfer control device, a humidifier, a dehumidifier, and a steam transfer device associated with a change in steam transfer characteristics due to destruction or rapid deterioration of the boundary between steam and air transfer, and When an internal local abnormal pressure such as an airtightness inspection device used at the time of setting is generated, the abnormal pressure can be released to prevent the membrane from being damaged.
又、 磁石が鉄含有球体及び弁座と離隔を保つので、 磁石に付 着するこ とがある磁石粉末や被磁性吸引物質 (鉄粉など) によ つて、 鉄含有球体の表面が汚損される こ とを予防し、 球体の移 動によって生じる磁石粉末の生成を予防するこ とができる。 In addition, since the magnet keeps a distance from the iron-containing sphere and the valve seat, it may be adhered to the magnet due to magnet powder or magnetically attracted substances (iron powder, etc.). Therefore, it is possible to prevent the surface of the iron-containing sphere from being soiled, and to prevent the generation of magnet powder caused by the movement of the sphere.
また、 磁石の損耗や鉄含有球体の損耗によって発生した切削 粉が、 磁石に吸着されるため、 弁座と鉄含有球体との気密性を 妨げることがない。  In addition, the cutting powder generated by the wear of the magnet and the iron-containing sphere is absorbed by the magnet, so that the airtightness between the valve seat and the iron-containing sphere is not hindered.
また磁力を用いて、 鉄含有球体を弁座に密着させる構造であ るため、 弁動作が極く低圧で動作可能となる。  In addition, since the iron-containing sphere is brought into close contact with the valve seat using magnetic force, the valve operation can be performed at extremely low pressure.
又、磁石と鉄含有球体とは、接触するこ とがない距離、即ち、 最接近時でも鉄含有球体と磁石が距離を保つよう に距離をお く ので、 鉄含有球体が磁化する こ とがな く、 球体の弁座に対する 吸着力が低下するこ とがない。 即ち、 鉄含有球体と、 弁座並び に磁石は電気的に絶縁され、 又、 鉄含有球体の運動距離も小さ いので、 一時磁性体である鉄含有球体が磁化しに く く、 このた め、 弁座への吸着力は安定し、 経年変化しに く い。  Also, since the magnet and the iron-containing sphere are separated from each other at a distance where they do not come into contact with each other, i.e., the distance between the magnet and the iron-containing sphere is maintained even at the time of closest approach, so that the iron-containing sphere may be magnetized. In addition, the suction force of the sphere to the valve seat does not decrease. In other words, the iron-containing sphere, the valve seat, and the magnet are electrically insulated, and the iron-containing sphere has a small movement distance. The adsorption force to the valve seat is stable and hardly changes over time.
又、 本発明の圧力安全弁 (請求項 2 ) では、 空気濾過手段を 設けたので、被使用装置や外気からの外来の被磁性吸引物質(鉄 粉等) などの汚損物質 (空気中の汚染物質と して排気ガスオイ ル、 塵埃、 小動物など) や磁石に付着する こ とがある磁石粉末 や磁性吸引物質 (鉄粉など) が、 弁室内に侵入するのを防止で ぎる。  Further, in the pressure relief valve of the present invention (claim 2), since air filtering means is provided, pollutants such as foreign magnetic attracted substances (iron powder, etc.) from the equipment to be used and the outside air (contaminants in the air). This prevents exhaust gas oil, dust, small animals, etc.) and magnet powder or magnetically attracted substances (eg, iron powder) that may adhere to the magnets from entering the valve chamber.
本発明の圧力安全弁 (請求項 3 ) では、 離隔調整手段を設け たので、 鉄含有球体を弁座に吸着して密着保持させるための磁 力を、 鉄含有球体と磁石との微妙な距離関係の調整によって調 整することができ、 弁動作が極く低圧で動作可能となる し、 被 使用装置の動作上要求される動作しきい値に的確に調整するこ とができる。 In the pressure relief valve of the present invention (Claim 3), since the separation adjusting means is provided, the magnetic force for adsorbing the iron-containing sphere to the valve seat and keeping the iron-containing sphere in close contact with the magnet is a delicate distance between the iron-containing sphere and the magnet. The valve operation can be performed at an extremely low pressure, and the operating threshold value required for the operation of the used equipment can be adjusted appropriately. Can be.
本発明の圧力安全弁 (請求項 4 ) では、 スぺーサを設けたの で、 磁石の取り付け位置を調整でき、 磁石による鉄含有球体に 対する吸着力を調整できる。  In the pressure relief valve of the present invention (claim 4), since the spacer is provided, the mounting position of the magnet can be adjusted, and the attraction force of the magnet to the iron-containing sphere can be adjusted.
本発明の圧力安全弁 (請求項 5 ) では、 凹部 (円形凹部) を 形成したので、 離隔調整手段による調整幅を広 く取るこ とがで きる。  In the pressure relief valve of the present invention (claim 5), since the concave portion (circular concave portion) is formed, the width of adjustment by the separation adjusting means can be widened.
本発明の圧力安全弁(請求項 6 )では、通気溝を設けたので、 鉄含有球体によって排気口が閉塞されたと しても、異常圧力を、 この通気溝を介して排気路に逃がすこ とができる。  In the pressure relief valve of the present invention (claim 6), since the ventilation groove is provided, even if the exhaust port is closed by the iron-containing sphere, abnormal pressure can be released to the exhaust path through the ventilation groove. it can.
本発明の圧力安全弁 (請求項 7 ) では、 鉄含有球体の表面を 防蝕加工したので、 鉄含有球体球体の鯖び付きや表面が汚損す るのを防止できる し、 鉄含有球体の移動に伴う磁石粉末の生成 を予防するこ とができる。  In the pressure relief valve of the present invention (claim 7), since the surface of the iron-containing sphere is subjected to anticorrosion processing, it is possible to prevent the iron-containing sphere from sticking to the surface and fouling the surface. The generation of magnet powder can be prevented.
本発明の圧力安全弁 (請求項 8 ) では、 弁座にフ ッ化ゴムに よるパッキンを装着させたので、 鉄含有球体と弁座との気密性 を確保でき、 弁座と鉄含有球体との接触抵抗の軽減ゃ耐油性に よる劣化予防などの効果が得られ、 精密な弁構造にできる。  In the pressure relief valve of the present invention (claim 8), since a seal made of fluorocarbon rubber is mounted on the valve seat, airtightness between the iron-containing sphere and the valve seat can be ensured, and the valve seat and the iron-containing sphere can be sealed. Reduction of contact resistance ゃ Effects such as prevention of deterioration due to oil resistance are obtained, and a precise valve structure can be achieved.

Claims

請求の範囲 The scope of the claims
1 . 水蒸気移動制御装置を備えた箱体や水蒸気移動制御装置 の設定に使用する気密性検査装置等を被使用装置と し、 この被 使用装置に生じた異常圧力を大気開放させるための圧力安全弁 であって、 1. A box equipped with a water vapor transfer control device, an airtightness inspection device used for setting the water vapor transfer control device, and the like are used devices, and a pressure safety valve for releasing abnormal pressure generated in the used device to the atmosphere. And
一端が被使用装置に接続される と共に他端の通気口が弁室内 に開口された通気路と、 一端が大気に連通される と共に他端の 排気口が弁室内に開口された排気路とがシ リ ンダー内に該シ リ ンダ一の軸方向に形成され、  An air passage having one end connected to the device to be used and a vent at the other end opened into the valve chamber, and an exhaust passage having one end communicating with the atmosphere and having an exhaust port at the other end opened into the valve chamber. Formed in the cylinder in the axial direction of the cylinder,
前記弁室内に弁体としての鉄含有球体が収容され、 この鉄含 有球体が、 常時は前記通気口を囲む状態に形成された弁座に密 着した状態に保持されて通気路と排気路との連通を遮断させ、 —方、 被使用装置に異常圧力が生じる と、 弁座から離反して通 気路と排気路を連通させるよう に形成された圧力安全弁であつ て、  An iron-containing sphere as a valve body is accommodated in the valve chamber, and the iron-containing sphere is normally kept tightly attached to a valve seat formed so as to surround the ventilation port, and a ventilation path and an exhaust path are provided. This is a pressure relief valve that is designed to disconnect from the valve seat, and to separate from the valve seat to connect the air passage and the exhaust passage when abnormal pressure is generated in the device to be used.
前記鉄含有球体を前記弁座に密着した状態に保持させる手段 として磁石が用いられ、  A magnet is used as means for holding the iron-containing sphere in close contact with the valve seat,
この磁石は、前記鉄含有球体が弁座に密着した状態において、 鉄含有球体及び弁座から離隔をおいて配置され、  The magnet is arranged at a distance from the iron-containing sphere and the valve seat in a state where the iron-containing sphere is in close contact with the valve seat,
前記鉄含有球体を弁座に吸着して密着保持させるための磁力 が、 前記被使用装置の動作上要求される動作しきい値に調整さ れている ことを特徴とする圧力安全弁。  A pressure relief valve, wherein a magnetic force for attracting and holding the iron-containing sphere in close contact with a valve seat is adjusted to an operation threshold value required for operation of the used device.
2 . 請求項 1記載の圧力安全弁において、前記通気路及び排気 路の途中に空気濾過手段が設けられている圧力安全弁。 2. The pressure relief valve according to claim 1, wherein air filtration means is provided in the middle of the ventilation path and the exhaust path.
3 . 請求項 1又は 2記載の圧力安全弁において、前記磁石をシ リ ンダの軸方向に移動させて、 磁石と、 鉄含有球体及び弁座と の離隔距離を調整するための離隔調整手段が設けられている圧 力安全弁。 3. The pressure relief valve according to claim 1 or 2, further comprising a separation adjusting means for adjusting a separation distance between the magnet, the iron-containing sphere, and the valve seat by moving the magnet in the axial direction of the cylinder. Pressure relief valve.
4 . 請求項 1又は 2又は 3記載の圧力安全弁において、前記磁 石の取り付け位置を調整するためのスぺーザが設けられている 圧力安全弁。  4. The pressure relief valve according to claim 1, wherein the pressure relief valve is provided with a spacer for adjusting a mounting position of the magnet.
5 . 請求項 1 〜 4のいずれかに記載の圧力安全弁において、弁 室内に開口された排気口の内面に、 鉄含有球体の移動距離を大 き く するための凹部が形成されている圧力安全弁。  5. The pressure relief valve according to any one of claims 1 to 4, wherein a concave portion for increasing a moving distance of the iron-containing sphere is formed on an inner surface of an exhaust port opened in the valve chamber. .
6 . 請求項 1 〜 5 のいずれかに記載の圧力安全弁において、弁 座から離反した鉄含有球体が排気口を閉塞するのを防止するた めに、 前記排気口の内面に排気路に連通する通気溝が形成され ている圧力安全弁。  6. The pressure relief valve according to any one of claims 1 to 5, wherein an iron-containing sphere separated from the valve seat is communicated with an exhaust path on an inner surface of the exhaust port to prevent the exhaust port from being closed. Pressure relief valve with vent groove.
7 . 請求項 1 〜 6 のいずれかに記載の圧力安全弁において、鉄 含有球体の表面が防蝕加工されている圧力安全弁。  7. The pressure relief valve according to any one of claims 1 to 6, wherein a surface of the iron-containing sphere is subjected to corrosion-resistant processing.
8 . 請求項 1 〜 7のいずれかに記載の圧力安全弁において、弁 座にフ ッ化ゴムによるパッキンが装着されている圧力安全弁。  8. The pressure relief valve according to any one of claims 1 to 7, wherein a packing made of fluorocarbon rubber is mounted on a valve seat.
PCT/JP2002/008283 2002-08-14 2002-08-14 Pressure relief valve WO2004016974A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004528818A JPWO2004016974A1 (en) 2002-08-14 2002-08-14 Pressure relief valve
PCT/JP2002/008283 WO2004016974A1 (en) 2002-08-14 2002-08-14 Pressure relief valve
AU2002328614A AU2002328614A1 (en) 2002-08-14 2002-08-14 Pressure relief valve

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017196295A1 (en) * 2016-05-09 2017-11-16 Cummins Inc. Pressure regulator plunger with an integrated check valve
WO2018029206A1 (en) * 2016-08-09 2018-02-15 Minimax Gmbh & Co. Kg Control system for a fire-extinguishing installation, and safety device
KR20190078289A (en) * 2017-12-26 2019-07-04 주식회사대성엘텍 Valve assembly for fragrance container
CN111624373A (en) * 2020-07-01 2020-09-04 强一半导体(苏州)有限公司 Magnetic pressure relief structure for power device test probe card and installation and calibration method thereof
CN111795188A (en) * 2019-04-03 2020-10-20 株式会社不二工机 Valve device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5584356U (en) * 1978-12-07 1980-06-10
JPS56101470A (en) * 1979-07-30 1981-08-14 Shimizu Mitsuru Vibration intercepter
JPS58157078U (en) * 1982-04-15 1983-10-20 第一精工株式会社 pressure regulating valve
JPS60180875U (en) * 1984-05-11 1985-11-30 日産自動車株式会社 check valve
JPH01220784A (en) * 1988-02-25 1989-09-04 Nippon Valqua Ind Ltd Valve
JPH03107679A (en) * 1989-09-20 1991-05-08 Daikin Ind Ltd Opening and closing valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5584356U (en) * 1978-12-07 1980-06-10
JPS56101470A (en) * 1979-07-30 1981-08-14 Shimizu Mitsuru Vibration intercepter
JPS58157078U (en) * 1982-04-15 1983-10-20 第一精工株式会社 pressure regulating valve
JPS60180875U (en) * 1984-05-11 1985-11-30 日産自動車株式会社 check valve
JPH01220784A (en) * 1988-02-25 1989-09-04 Nippon Valqua Ind Ltd Valve
JPH03107679A (en) * 1989-09-20 1991-05-08 Daikin Ind Ltd Opening and closing valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017196295A1 (en) * 2016-05-09 2017-11-16 Cummins Inc. Pressure regulator plunger with an integrated check valve
WO2018029206A1 (en) * 2016-08-09 2018-02-15 Minimax Gmbh & Co. Kg Control system for a fire-extinguishing installation, and safety device
US11376455B2 (en) 2016-08-09 2022-07-05 Minimax Gmbh Control system for a fire-extinguishing installation, and safety device
KR20190078289A (en) * 2017-12-26 2019-07-04 주식회사대성엘텍 Valve assembly for fragrance container
KR102011973B1 (en) * 2017-12-26 2019-08-19 주식회사 대성엘텍 Valve assembly for fragrance container
CN111795188A (en) * 2019-04-03 2020-10-20 株式会社不二工机 Valve device
CN111795188B (en) * 2019-04-03 2024-02-20 株式会社不二工机 Valve device
CN111624373A (en) * 2020-07-01 2020-09-04 强一半导体(苏州)有限公司 Magnetic pressure relief structure for power device test probe card and installation and calibration method thereof

Also Published As

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JPWO2004016974A1 (en) 2005-12-02
AU2002328614A1 (en) 2004-03-03

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